Can Riot fix matchmaking already?

Title. MMR is a stupid system that pits you against disproportionately strong teams when you're on a streak, and vice-versa when not. Basically games are determined by a random dice-roll rather than pitting two teams of similar skill against each other. It's LoL's biggest failing by far and honestly making ranked a trial in frustration and futility. People are happy about skins and reworks, but honestly this issue permeates itself in virtually every single game of League being played. It's high-time Riot fixed this.