Is it so hard to improve matchmaking?

the experience for solo queue players has been miserable for years. Why am I being matched against 2- and 3-stack teams? They go on to dominate the game. I’ve had 10k games played; why do you put players with <2k on my team? You people make millions and millions of dollars. Why can’t you figure out anything this basic? This experience is terrible and you’re all complicit