You gotta be mellow, and then start with just a finger and work your way up to 2 and then 3 and then eventually you'll be good.
To answer the op, yes I have. I do everytime I fap.
no, but it could be fun idk. i feel like its one of those things that youre fine without but if you do it youll want to do it a Lot more and maybe youre better off without it tho