Meetup anxiety / actually meeting up?

Hey guys! I’m 24M, have been pretty confident in my bisexuality ever since college, would say I’m pretty attractive, and would definitely say I’m more of a bottom. I’ve talked to guys on multiple apps (Grindr, Reddit, X, etc), use fairly large toys regularly, and even showed off a bit for attention. Despite this, I’ve still never actually hooked up with a guy despite having more than enough opportunity to do so. In the past, I’ve exchanged numbers and face pics only to flake/block the day of or prior, out of fear or anxiety mainly… my question then is, why is that? Any advice on actually following through?