halo 5 crashing on mission blue team

I’m trying to play the game on legendary and as I get into the reactor core I get killed and aft the AI failed to revive me the game closes and takes me back to the xbox home menu. Then I try to resume my game play but the same thing happens as well as loading pervious checkpoint save. Now I have to start from the binging agene. Why is this happing It did not happen the first or second time playing the campaign…:C

I like Halo 5 and not as a game but as a franchise but as of late the game been having a lot of problems can’t play campaign and when I play MP arena or war zone I’am afraid that the connection will get lost and when it happens multiple times I am pretty shore it will result in a ban because the game thinks I’m quitting but its the severs just terrible and I don’t really want to use req cards if I will get kicked. I do get the odd match. I slowly getting put off if this keeps happening.