u/Immediate_Meat_1031

I recently tried having sex for the first time. I have around grade 4-5 of phimosis, but I was doing it with a condom. When I slipped inside, I couldn't feel a single thing and went soft. I am wondering, is this an issue with death grip, the condom, or my phimosis? Does anyone have any advice?

EDIT: I don't think it's death grip, I could be wrong though. My partner can get me off with her hand just fine.