How to pick a FWB? I’m SOO serious.

I basically had one because I use to hook up with my ex that I broke up with two years ago. I’ve been talking to this guy but he is ANNOYING, & not my type as in a bf, a friend SURE. I’m really just needing a FIX, and I want to be over & done with my ex so I’m not hitting him up 🤦🏽‍♀️ I really don’t want to add anyone to my body count cause I’m 21 and I’ve slept with 6 people but I wanna say 4 cause them others didn’t count 💀💀💀😹😹 (jk but not lmao)