TS mentioned that he was recently a virgin - so perhaps he does not have much of a sample size (with a variety of ladies) to go on.
Personal anecdote which you may find useful/funny or not:
Sometime back I thought I had the same problem but it turned out that the girl I was with had a very relaxed and overly wet meimei which gave me the same problems (Had to mindgame myself into shooting or else I could have gone on forever
)
Engaged an FL afterwards and exploded in 5 minutes due to the tightness/friction
If you have bonked like 5+ girls and still experience the same problems then you can pursue the suggestions other bros mentioned.