Usually they do some sort of soft reset on mmr. If you are a d4 mmr player and you screw up a lot of games you might end up on 2 or 3. After reset you might be gold 3 mmr. If you had stayed at your peak you could go Gold 2.
Does your MMR reset every season?
no Your MMR from the previous season will be taken into account when playing your ranked matches for the following season. If you’re Gold V, you’ll probably get the same rank if you play average for your level.
Can your MMR increase even if you lose?
MMR decreases when your link explodes. When you win, your MMR goes up and when you lose, it goes down. Your personal stats or ratings do not affect your MMR. It only changes when you win or lose.
Does your rank reset every Valorant season?
Ranks no longer reset when a new act is released, although players still need to play at least one placement game.
Does the LOL ranking reset every season?
Every new season means a new beginning. To help you, we’re resetting your rank and placing you slightly lower so you can berate yourself as you climb the ranks. In the past, this meant playing ten high-stakes placement games with little to no winnings, which made many players anxious.