I would say try Smite. I play Smite myself and find I enjoy my games more.
Smite is 3rd person (over the shoulder) view, uses gods from actual pantheons.
Alot less toxicity
More skill based, everything is all based on Skillshots (including basic attacks)
A VERY Detailed tutorial.
Community has ALOT more maturity.
and far as I have seen it doesnt take 50 minutes and counting just to find a match.
There is ALOT of tutorial information, Alot of featured game modes (average rotation for Featured game mode/match of the day is about 7hrs I think, they then change it up)
If you want something new. I would suggest leaving league behind and definately try smite. I would be happy to help out if you want :D
I am no pro but I could certainly do my best to help get you settled :D