COULD NOT FIND SERVER THAT WAS SUITABLE FOR ALL MEMBERS OF YOUR FIRETEAM
please anybody help me with this i there is no one but me in my fireteam and all game modes say that same error CAN SOMEONE PLSSS HELP
In this case you should most likely either hard reset your Xbox or reset your router/modem. Doing both typically works.
I must say I agree with NH Deadpool in most instances. However, sometimes it can be your ISP or the actual servers. Hopefully some jerk group of hackers doesn't get us again this Christmas.