Avoid wanking and porn for a couple of weeks
Couldn't be bothered to read this entire thread, but I can tell you that this is the answer ^^^^^
Except instead of stopping porn and masturbation for 2 weeks, just stop period - this will take some time and will power in order to do, but it is worth it.
Research is coming out that people who have built up a habit of masturbating to porn since they were young up until their twenties, are experiencing problems in getting erections, and ejaculating during real sex.
The good news is you can reverse this effect very easily by stopping masturbating to porn. Just stop. And having sex (seems you've figured out that you can have sex quite easily with prossies
Stop masturbating completely, and replace it with having sex at least once a week (this is going to be easier if you find a girlfriend after your problem is fixed).
There are people on this forum who will tell you that this is all bullshit, and that masturbating to porn will not affect your ability to cum or get erections. But these are people who just don't want to give up masturbating - so ignore them.
Good luck with improving your sex life!