Practice some other things fakie, what really helped me was learning fakie shove its because it got me used to not having my feet under the board, foot placement pretty much same as a kickflip.

Your foot doesnt matter. Just do exactly what you do on your regular kickflips. Just lean slightly towards your flicking foot. Also, a good fakie ollie helps alot. So if you have those down, you should get it

Get your fakie ollies nice and popped first, levelled flat in the air. You’ll find that you stay more central over the board when it comes to trying fakie flips, making them easier. From doing this I feel like they’re easier to flick than regular kickflips

Ftÿûœp gijłab

I put front foot first but it doesn’t matter, a flick not hard, flick hard when u want double or triple flip

I guess the one that you are comfortable with. For me it was my back foot. And you gotta lean forward more so board flips under you.