having problems with MCC(Xbox one)

so i’m having an ongoing problems where i try to get into matchmaking games and once the game starts it says “host connection” and then all the players leaves and it kicks me out, but once i go into a 1v1 game… i’m allowed to play with “that specific person” i dont get it, i tried it with my brother’s Xbox live account and i can play games freely on his secondary account but once i use mine i can’t get into any :heart::heart::heart::heart::heart: game. All i know is, he has xbox live game pass and i for the likes of me, and idk why i did this, i bought the stupid digital version of halo mcc for xbox one thinking it was conflicted… Could my problems be linked with the fact that my account is linked to steam’s version of MCC and on the xbox live version of xbox one it kicks me out in games, could that be the colprit? I really want to play :heart::heart::heart::heart::heart: matchmaking games but it kicks me off on my account but when i play on my brother’s secondary account it doenst!

you guys better not ignore this because i bought this digital game for 39 dollars.

Please don’t ignore this post I really want to play games on my account :/. Me and my brother both have Xbox’s and i hate to see 39 dollars wasted… I don’t want to use his secondary account.