4) 2 Thessalonians 2:13 contains one of many "grammatical transformations" found in the ESV where a noun (salvation) is rewritten as a verb (saved) in order alter what the verse says which is God chooses individuals for salvation through faith in the truth, a conditional election.
I don't know of any translation that says that, here are few to consider:
NKJ 2 Thessalonians 2:13 But we are bound to give thanks to God always for you, brethren beloved by the Lord, because God from the beginning chose you for salvation through sanctification
by the Spirit and belief in the truth,
KJV 2 Thessalonians 2:13 But we are bound to give thanks alway to God for you, brethren beloved of the Lord, because God hath from the beginning chosen you to salvation through sanctification
of the Spirit and belief of the truth:
ESV 2 Thessalonians 2:13 But awe ought always to give thanks to God for you, bbrothers beloved by the Lord, because God chose you cas the firstfruits1 dto be saved, ethrough sanctification
by the Spirit and belief in the truth.
NET 2 Thessalonians 2:13 But we ought to thank God always for you, brothers and sisters26 loved by the Lord, because God chose you from the beginning27 for salvation through sanctification
by the Spirit and faith in the truth.
NIB 2 Thessalonians 2:13 But we ought always to thank God for you, brothers loved by the Lord, because from the beginning God chose you {Some manuscripts because God chose you as his firstfruits} to be saved through the sanctifying work
of the Spirit and through belief in the truth.
NAS 2 Thessalonians 2:13 But we should always give thanks to God for you, brethren beloved by the Lord, because God has chosen you from the beginning for salvation through sanctification
by the Spirit and faith in the truth.
It looks to me that they all include the clause, 'by the Spirit' or something similar, an important clause that you seem to have left out.
Now, can you explain how 'chosen to be saved' is materially different in meaning to 'chosen to salvation'? Neither allows for it to be condition for both are 'chosen to.....' it is simply two ways of sat the same thing in English.