the toxicness of sea server aside

if you're new to a dota 2 genre game, it'd hard for you to learn

you need to play a lot, watch some games, and just keep playing.

this is not a diss to league, but dota is a lot harder to play compared to league, it's a lot more complicated. so my advise to you, play, keep playing, throw your ego aside and learn. follow someone who has high mmr, it doesnt matter if they scold you, you just need to learn from them and their perspectives, then learn the game itself