Best way to improve in LOL?

Just play a lot games, and see what are u doing wrong.
Watch the games that u lose.
Try anothers Builds.

Play a lot and revise your gameplay.
Check your build and try new things..

Keep playing, train, watch pro players, play with better friends, it really helped me

Play, play and play again...
Try improve your dodges, and your builds.

I would watch pros playing the champions you specifically want to improve at. Each champion has enough of a different strategy that just 'learning the game' in general helps, but can only take you so far.

Personally i think, the more you know about the different champions in LOL you learn how to counter them. Then practise!

eep playing, train, watch pro players, play with better friends, it really helped me :D not realy

Watch replays,watch tutorials,streamers and you can learn and improve a lot

there are lots of tutorials on youtube watching them really helps ur gameplay

personally when i play a new champion i watch gameplay videos on youtube about the champion, see how he plays and try to adapt. After there are no secrets, you have to play, play, play and play.