You can find a gaming partner here on the platform of your preference.
This is a place for ENG speaking players.

Select a subforum and post a discussion with needed details: profile/gamertag/etc., info about yourself, who are you looking for and for what game mode (SWF/KYF/achievement hunting/etc.) and so on.

Or you can look at already existing discussions to find your buddy.

If you want to use voice chat on PC, check out the https://discord.gg/deadbydaylight server.