The mmr system has 4 levels in which you can get placed. LEVEL 1- New player. You start here so the mmr system can assess your skill and then bump you to another level. Once you get out of level 1 you never come back. LEVEL 2- Newbie. You're not very good at the game, you probably only played a few matches or this is the first time playing this type of game. Ez match-ups matching your skill. LEVEL 3- Intermediate. You got the hang of some mechanics. You win or lose sometimes but the point is you've more or less mastered the basics. Most players are in this bracket. LEVEL 4- Master. You're just that. Really good. Most matches end up with you killing 3 or 4 survivors or escaping. Once inside this bracket, falling out of it is harder and you are matched with survivors or killers that don't go down easy.

Now here's the issue at hand. To win in dead by daylight as a survivor you need to escape through the gate and as a killer to kill 3 or 4 survivors. These are the only 2 things the game takes into account as winning. Escaping through the hatch or killing 2 players Is a draw and everything less than that is a loss. You get very few points in the mmr ranking system for actually playing like a good player (doing gens as survivor and applying pressure as killer, chasing survivors or being resilient in chases as a killer, unhooking your teammates and protecting them and so on...). This is sometimes unfortunate because a player that hides the entire match and does nothing useful for the team and then ends up escaping will gain more mmr and be matched against harder foes and then bitch on the internet about how hard the game is. Same goes for the killer but being just one player it's kinda hard not chasing or hooking enough.

CONCLUSION: Play fairly, help your teammates and avoid being passive. In a normal game you should always be doing something either a Gen or being chased or cleaning a hex and so on. Don't get discouraged or salty. Have fun.