I think my ex ruined sex for me with other men

My ex and I broke up in February but still occasionally see each other because we’re still really good friends and like spending time with each other.

We were together for a little over a year and always had amazing sex other then when we first got together, which I think is to be expected cause you’re just learning each other etc.

Anyway. Now I’ve started dating other men and have found that absolutely no one is/has been as good as him and I’m starting to worry I’ll never find someone that good. I’ve had sex with a few people since we broke up and i just feel unsatisfied everytime.

It’s not like hes huge or super girthy. He’s about average. But definitely knows exactly what I like and how to use it.

I recently started seeing a new guy and he’s atleast 2 inches bigger then my ex and even that hasn’t satisfied me. Which sucks because I really like him and don’t want to have to pretend to be satisfied during sex :\ (we’re very open about sex and what we like etc)

I’m seriously starting to really worry that I won’t get pleasure from another man again and Im worried about it affecting future relationships. Sex is such a huge thing for me and having the right sexual chemistry is important so Im genuinely starting to get concerned there may be something wrong with me.

Has anyone ever experienced something like this? Wtf did you do?

Is this like a lack of emotional connection thing? Lack of knowing each other and what each other like? Or maybe the men have just been bad.

HELP