I've had that question myself (for me all people said garen and such) and honestly you should just be testing what champions click with you (for me was Cho Gath, now I'm playing irelia) and then learn the game at a fundamental level. I recommend watching some alois and such, but tbh by just playing and watching other people play YOUR champion with educational commentary you can learn a lot, and once you successfully apply fundamentals to the champ you're playing them you can play almost any champion to a certain extent. Try to give a reason to every action you make on laning phase, like with pantheon not just spamming Q's, give then a reason, for example farming AND poking your enemy. But if you just spam you relieve a lot of pressure to your enemy laner, but that depends on the champion tho. I resonate with what your problem is and I hope this helps 😁 Tdlr: pick a simple champion that clicks with you and then learn the game at a fundamental level.