How did you study to get your drivers permit/license?

for Context, I am 20 and I've been trying to get my permit for about three years since I was about 17-18 we tried as soon as I can in my state which is 17 and a half I think, I have tried so many tips and tricks from listening to music while studying, watching a movie which usually helped with high school test studying, to using absolutely no phone at all.

For my first test I read the booklet as normal, for the second I tried with music and at a desk, for a while during that I tried a movie because I remember scenes from a movie and link that with the booklet. for the third one I tried no distractions, nothing online and just a high lighter and a booklet. for the fourth time I did Online practice tests, and I get great results! but when it comes to the actual test, I fail that. Last time I tried those drivers permit apps but still failed. I did both computer and paper versions of the test but somehow always end up failing. I have tried everything from tips from my dad who has ADHD to tips on the internet on google.

for extra info I don't take any medicine, nothing that helps with ADHD and to be honest I don't even know if it even is ADHD at this point or if it's something else, Any help is really appreciated, thank you for your time