[2021] Matchmaking has such an easy fix...

There'll be a upcoming change to the MMR where it pairs you up based on a different system. E.g. if you're doing well, let's say with Spirit, you'll be matched with people who do well, but then you want to learn Nurse, it'll take that into consideration.

https://forum.deadbydaylight.com/en/discussion/217721/developer-update-january-2021

https://forum.deadbydaylight.com/en/discussion/173606/news-matchmaking-update

I advise reading these two threads.