Got lead certified recently, but I pretty much drop a grade when climbing lead - I’m not as confident and I overgrip.
I’ve done lead falls, I know how to do 'em well, and yet… as someone who’s done top rope for many years, it’s scary not feeling the tension (however small) of a rope pulling your harness up.
Find routes that you can climb in 2-3 attempts in redpoint style and climb to the fall on each attempt. Only move to a knew route when you climbed it or it is really to hard. After a time you get confident with falling