Demoted to S2, probably going to stop playing for a long time.

I've had enough i clearly have no idea what I'm doing and can't improve just demoted to Silver 2 after about 4 million losses. I get good KDA's push objectives, win my lane (most of the time), focus squishy's in team fights all of that, watch some challenger streams, but apparently i haven't learnt anything because i can't win. I HAVE NO IDEA WHAT TO DO. So yeah... I'm not playing this for a while.