Paul did NOT struggle the way he did BEFORE Jesus saved him.
You are right. After salvation he had more of a struggle, not less.
I do NOT struggle with sins of the flesh as I did when I was a baby Christian, and especially NOT the same way as BEFORE Jesus saved me.
Most unsaved people don't struggle with sin. They don't fight the devil; they leap in the pit with him and enjoy the sin. They enjoy their sin, not struggle against it. Why would you struggle against sin when you are not saved. That doesn't make sense, not is it Biblical.
Luke 12:16-19 And he spake a parable unto them, saying, The ground of a certain rich man brought forth plentifully: And he thought within himself, saying, What shall I do, because I have no room where to bestow my fruits? And he said, This will I do: I will pull down my barns, and build greater; and there will I bestow all my fruits and my goods. And I will say to my soul, Soul, thou hast much goods laid up for many years; take thine ease, eat, drink,
and be merry.
--This man had no struggle with sin. He enjoyed life. "Eat drink and be merry." No problem. An increase in materialism. Life was great.
He didn't struggle with sin. Why would he?
Mark 10:21-22 Then Jesus beholding him loved him, and said unto him, One thing thou lackest: go thy way, sell whatsoever thou hast, and give to the poor, and thou shalt have treasure in heaven: and come, take up the cross, and follow me.
And he was sad at that saying, and went away grieved: for he had great possessions.
--He went away sad after talking with Jesus. But soon after he forgot about him, got caught up in his riches again and began to enjoy life. He didn't have to struggle with sin. Sin was on his side.
1 Corinthians 6:9-11 Know ye not that the unrighteous shall not inherit the kingdom of God? Be not deceived: neither
fornicators, nor idolaters, nor adulterers, nor effeminate, nor abusers of themselves with mankind, Nor thieves, nor covetous, nor drunkards, nor revilers, nor extortioners, shall inherit the kingdom of God.
11 And such were some of you: but ye are washed, but ye are sanctified, but ye are justified in the name of the Lord Jesus, and by the Spirit of our God.
--These individuals: "fornicators, idolaters, adulterers, effeminate, abusers of themselves with mankind, thieves, covetous, drunkards, revilers, or extortioners, struggle with sin. They love it. They like what they do. They enjoy their sin.
--But verse eleven says: "such were some of you." The struggle comes after one is saved when the old nature struggles with the new nature. There is a battle going on. What about that battle? It must be fought on a daily basis, over and over and over again.
Thus Paul said:
I die daily. (1Cor.15:31). I die daily, not just once as you teach, but every day, and sometimes it is the same sin more than once.
A just man falls seven times and gets up again.
Ephesians 6:10-18 Finally, my brethren, be strong in the Lord, and in the power of his might. Put on the whole armour of God, that ye may be able to stand against the wiles of the devil. For we wrestle not against flesh and blood, but against principalities, against powers, against the rulers of the darkness of this world, against spiritual wickedness in high
places. Wherefore take unto you the whole armour of God, that ye may be able to withstand in the evil day, and having done all, to stand. Stand therefore, having your loins girt about with truth, and having on the breastplate of righteousness; And your feet shod with the preparation of the gospel of peace; Above all, taking the shield of faith, wherewith ye shall be able to quench all the fiery darts of the wicked. And take the helmet of salvation, and the sword of the Spirit, which is the word of God: Praying always with all prayer and supplication in the Spirit, and watching thereunto with all perseverance and supplication for all saints;
--It is a battle, a daily struggle, and for that reason God has made available to us every piece of armor that we as Christians need to overcome sin.
We are to withstand in the evil day. We wrestle not against flesh and blood, but against principalities... We wrestle; wrestle against demons, demonic power, sin, etc. It is war, battles, etc. The battle is tougher and harder now than ever before. The more one comes closer to the Lord the tougher the battle gets, not easier. You have it backwards.
2 Corinthians 10:3-5 For though we walk in the flesh, we do not war after the flesh: (For the weapons of our warfare
are not carnal, but mighty through God to the pulling down of strong holds

Casting down imaginations, and every high thing that exalteth itself against the knowledge of God, and bringing into captivity every thought to the obedience of Christ;
--The weapons of our warfare are not carnal...
We are in a war, a struggle with sin, with the very thoughts that enter our mind. It goes on every day. Are you able to bring every thought that enters your mind into captivity, to the obedience of Jesus Christ? That is the command here. Understand this, and you realize that the battle becomes harder not easier as the Christian becomes more mature. The more light one has the more responsible he is to the Lord; the more intense the fight will be; the greater the battle with Satan will be. Satan hits the hardest at those who are able to do the most damage to the work of Christ.
Those Christians who do not believe they are in any struggle, or feel no struggle against sin should look well to their own salvation.