What I got to do to get a s+ up in here?

U basically need to do better than you did in S- game.

Git gud

do better than almost everyone in your "skill bracket" in a certain amt of time...

some people have taken to dropping their mmr so they play against "weaker players" where they have the chance to snowball.... it is the easiest way i have seen state so for of getting s+.... drop ur mmr till you play against people below ur skill level then beat them down... it will add to the horrible game atmosphere, but it does work and many people are doing it

Basically play safer. Keep your deaths low, farm a lot, ward, and participate in teamfights or ganks to pick up plenty of kills.

Have good farm and above 50% kill participation.