Condom slipping off

Is it normal for the condom to slip off while he’s pulling out?? How often do you experience this?

I was freaking out because I thought he had taken it off but I guess it happened with our movements and i noticed it right away. We immediately got a new one.

I’m a little worried. Tips would be highly appreciated.

I’m sad because this didn’t use to happen with my ex :( who was on the thicker side