Not playing league as often...
I started reducing my playtime on league of legends because of multiple factors that impacted me and my friends.
Friends
My friends are in a rough patch because a friend of ours is toxic/rages after things goes wrong and says they know more than others so i had to restrict all play with that person and refusing to play league with them again so half of us stopped playing.
Frustration
I am garbage at the game lets get that out of the way.
I'm frustrated when either the whole team feeds and you're fine. Also when you feed a carry and you get flamed for playing bad when you know you're playing bad even with muting it doesn't help the game cause you cannot communicate with teammate message wise. One thing that is frustrating is when the opposite team has smurfs and they out class you in every way causing the previous things I mentioned.
Meta
The problem with meta is it caters to the LCS and not casuals and somewhat serious players. The casuals are stuck playing strategies that are set by higher elo and there is a lack of players able to explore new strategies and rely mostly on the Koreans to find them for them. Players even in normal players are extremely toxic when people want to try something new when Riot says people don't have to follow meta but riot forces meta when a Rioter manually audited the infamous diamond singed commenting on supports needed to by a Sightstone when it was around which i think is why all the support items now can place wards giving supports more flexibility.
Lack of motivation
Which all the issues above the game seems tiresome when you're not that good and you are tired of being flamed and issues with your friendships and game play I feel that for me is a sigh to restrict play and play when i am in the mood for it. Overall I stopped playing as often.