The command to be baptized in acts 2 was not given to everyone. It was only given to individuals.
so it could not be a call to the nation. If it was the command to repent and be baptized would both be 2nd person plural.
so your thoughts on what acts 2 means is flawed..
again, if you would look at the greek you would see this..
It was a collective call because that is the way God views his people. However, each individual makes up the collective and must obey the command if they receive the gift.
When he finally does save all Israel, it will be all of them who are left, which will be few in number because this in Acts 2 is a baptism of Israel with the Holy Ghost but they have another baptism in the future which will be with fire.
Ex 4:22 And thou shalt say unto Pharaoh, Thus saith the Lord, Israel is my son, even my firstborn:
23 And I say unto thee, Let my son go, that he may serve me: and if thou refuse to let him go, behold, I will slay thy son, even thy firstborn.
He was to be born again at Pentecost in Acts 2 when the Spirit was given from God as a gift.
Matt 3:7 But when he saw many of the Pharisees and Sadducees come to his baptism, he said unto them, O generation of vipers, who hath warned you to flee from the wrath to come?
8 Bring forth therefore fruits meet for repentance:
9 And think not to say within yourselves, We have Abraham to our father: for I say unto you, that God is able of these stones to raise up children unto Abraham.
10 And now also the axe is laid unto the root of the trees: therefore every tree which bringeth not forth good fruit is hewn down, and cast into the fire.
11 I indeed baptize you with water unto repentance. but he that cometh after me is mightier than I, whose shoes I am not worthy to bear: he shall baptize you with the Holy Ghost, and with fire:
12 Whose fan is in his hand, and he will throughly purge his floor, and gather his wheat into the garner; but he will burn up the chaff with unquenchable fire.
19 Repent ye therefore, and be converted, that your sins may be blotted out, when the times of refreshing shall come from the presence of the Lord.
20 And he shall send Jesus Christ, which before was preached unto you:
21 Whom the heaven must receive until the times of restitution of all things, which God hath spoken by the mouth of all his holy prophets since the world began.
22 For Moses truly said unto the fathers, A prophet shall the Lord your God raise up unto you of your brethren, like unto me; him shall ye hear in all things whatsoever he shall say unto you.
23
And it shall come to pass, that every soul, which will not hear that prophet, shall be destroyed from among the people.
24 Yea, and all the prophets from Samuel and those that follow after, as many as have spoken, have likewise foretold of these days.
25 Ye are the children of the prophets, and of the covenant which God made with our fathers, saying unto Abraham, And in thy seed shall all the kindreds of the earth be blessed.
26 Unto you first God, having raised up his Son Jesus, sent him to bless you, in turning away every one of you from his iniquities.
lK 19:10 For the Son of man is come to seek and to save that which was lost.
11 And as they heard these things, he added and spake a parable, because he was nigh to Jerusalem, and because they thought that the kingdom of God should immediately appear.
12 He said therefore, A certain nobleman went into a far country to receive for himself a kingdom, and to return.
13 And he called his ten servants, and delivered them ten pounds, and said unto them, Occupy till I come.
14 But his citizens hated him, and sent a message after him, saying, We will not have this man to reign over us.
15 And it came to pass, that when he was returned, having received the kingdom, then he commanded these servants to be called unto him, to whom he had given the money, that he might know how much every man had gained by trading.16 Then came the first, saying, Lord, thy pound hath gained ten pounds.
17 And he said unto him, Well, thou good servant: because thou hast been faithful in a very little, have thou authority over ten cities.18 And the second came, saying, Lord, thy pound hath gained five pounds.19 And he said likewise to him, Be thou also over five cities.
20 And another came, saying, Lord, behold, here is thy pound, which I have kept laid up in a napkin:21 For I feared thee, because thou art an austere man: thou takest up that thou layedst not down, and reapest that thou didst not sow.
22 And he saith unto him, Out of thine own mouth will I judge thee, thou wicked servant. Thou knewest that I was an austere man, taking up that I laid not down, and reaping that I did not sow:
23 Wherefore then gavest not thou my money into the bank, that at my coming I might have required mine own with usury?
24 And he said unto them that stood by, Take from him the pound, and give it to him that hath ten pounds.
25 (And they said unto him, Lord, he hath ten pounds.)
26 For I say unto you, That unto every one which hath shall be given; and from him that hath not, even that he hath shall be taken away from him.
27
But those mine enemies, which would not that I should reign over them, bring hither, and slay them before me.
25 For I would not, brethren, that ye should be ignorant of this mystery, lest ye should be wise in your own conceits; that blindness in part is happened to Israel, until the fulness of the Gentiles be come in.
26 And so all Israel shall be saved: as it is written, There shall come out of Sion the Deliverer, and shall turn away ungodliness from Jacob:
27 For this is my covenant unto them, when I shall take away their sins.
28 As concerning the gospel, they are enemies for your sakes: but as touching the election, they are beloved for the father's sakes.
29 For the gifts and calling of God are without repentance.
30 For as ye in times past have not believed God, yet have now obtained mercy through their unbelief:
31 Even so have these also now not believed, that through your mercy they also may obtain mercy.
32 For God hath concluded them all in unbelief, that he might have mercy upon all.
Isaiah 24:6
Therefore hath the curse devoured the earth, and they that dwell therein are desolate: therefore the inhabitants of the earth are burned, and few men left.
Jeremiah 19:11
And shalt say unto them, Thus saith the Lord of hosts; Even so will I break this people and this city, as one breaketh a potter's vessel, that cannot be made whole again: and they shall bury them in Tophet, till there be no place to bury.
Israel will be purified by fire by those 7 plagues of Revelation.
Psa 126 The words of the Lord are pure words: as silver tried in a furnace of earth, purified seven times.
7 Thou shalt keep them, O Lord, thou shalt preserve them from this generation for ever.
Of course you are not going to believe any of this, right?