Just move your front foot more on the back of your bord, this worked for me. For fakie ollies you need to commit, it’s just like a normal Ollie but going backwards.

Flick Your Foot Harder

It’s all in the slide. For normal ollies, use the slide of a your front foot to level the board out. Apply the same principle to the fakie Ollie and you should be good 👌

Make sure when you pop you aren’t keeping your foot on the tail and then try to slide farther and more forward