lol i entered quickmatches by mistake and i've played a couple but they seem to never keep coming. so how do you stop being entered into new ones

Only in unity/ the mobile app you can stop it. In there, go to the top and click "Quickmatch", and there you can offset "Invite me to multi-day games".

You can only change Quickmatch settings if you're using the Unity version, not Flash version.
Edit: BTW, at least check for threads that answer this same question - there's been at least 10 threads about this so far this month.

Edited 12/15/2017 22:56:19