How to get good?

Hi, im a new player to league, whats the best way to get better at the game?

a lot of info on op.gg but the builds there are static

Check out Item OP for dynamic calculated builds instead

If you're new, I think you should start by just playing the game, to learn about all the different champions, spells, objectives, etc by experience. Once you know what everything is, you should decide on a role to main, and watch videos/educational streams by players who play that role. If you have questions, sometimes is possible to find some smaller educational streamers and ask them during their stream. Alternatively, there's /r/summonerschool and the monthly monday megathread at /r/leagueoflegends on https://www.reddi*****m to ask questions.