I'm surprised they ever had new players stay with how toxic that game's community is.
I tried it when it was still pretty newish, hopped onto the fucking tutorial servers where you're playing with real people on your team, but against bots and there's literally no stakes.
The level of vitriol I got for not immediately knowing the meta was enough to make me uninstall and just never bother with it again. I tried DOTA2 after and had the same experience, which turned me off to the entire genre.