Hey! I feel your pain, coming up with a username is such a struggle lol. I used SpinXO a while back for a rrandom username generator for eBay, and it’s pretty solid. You can add keywords like your name or interests, and it gives you a bunch of options. It’s free too, so no need to spend anything. Just avoid the super cringe ones it throws in sometimes haha.
Good luck!
Good luck!