Cheating is an issue and there’s no way to report anyone

Cheating is a giant issue. Just finished a game of slayer with someone going 20 and 1. Very clearly never missed a headshot, followed people through walls, didn’t even try to hide it. There is no option to report someone in the game. I went to theater mode to get a clip from his perspective, and I couldn’t even launch the clip. There are so many fundamental problems with this game. I’ve been patient and waited for changes, but with how bad the cheating issue is, paired with the fact that I am level 100 with no progression for the next 4 months, is going to make me put this game on the shelf. I’m really bummed about it because I love Halo and have been playing it since I was a kid.