Could someone explainme why i keep getting matched with onyx/diamond players being gold?
343 fix your matchmaking
If you want to get feedback on why your matches turned like they did, feel free to leave a constructive post in the matchmaking feedback thread. If you link some of your games Dr. Menke can potentially look into that for you:
https://www.halowaypoint.com/en-us/forums/58b8518e005f432381ab99fbcaf931e0/topics/matchmaking-feedback-update-%e2%80%93-february-5/1d40967b-00eb-4dde-8db6-3239f82ce8e8/posts