Help Air Out/ Trick Out

Alright, I’m getting back into scootering after 10 years, ended up getting a street set up, but I slip out of EVERYTHING, wether it be a ledge I slip out backwards, if it’s a rail same thing, I can’t even air out of a quarter pipe and trick out with out landing in a manual and busting my ass, day after day trying to catch a tailwhip I have slid out straight to the back of my elbows and head, please any advice