Am i ruined?

Alright basically im 17M and i never had a gf since like a bunch of months. I used to masturbate like once a day for i think basically 6 years or so, maybe a bit less. So basically when i try to have sex with this girl i just can’t get or stay hard while i can definitely do it while im alone. I used to watch porn but it’s been like 2 months since i watched my last one and i can still goon and stay hard without it (when im alone). I can stay hard (like 80% of max) with bj but as soon as we’re approaching sex i just can’t get hard and as soon as i put a condom it just kills everything. I only tried a bunch of times so i don’t really know if im wrong or it’s just me thinking. I’m a professional overthinker in life so idk. I literally shake from anxiety when i know we ain’t stopping on bj and we’re going to try sex, even if i love the idea…. What’s wrong with me? I’m sad

Rn i’m just trying to stop porn (2 months free) but also stop masturbating by myself and i don’t even know if im doing right or no

I already talked and she chill af so no problem about that side i think