I want to start to play lol

Ngl if you only want to play League because of Arcane, just don't. Except for the characters being in the game, there's nothing in common between game and show. If you still want to play it, just do it. Don't "fear" the LoL community. If you play by yourself at low levels you'll be matched with other new players, barely anyone uses chat and if they do just ignore/mute them. People talk a lot of shit about LoL being unplayable because of the community but there's literally a 1 click button that takes all those problems away.