Can't play one of my games on my new One X

My xbox one x keeps shutting oldown after playing modern warfare ( new game). Why can't you guys fix this? It's been over a week people....c'mon

I just bought a brand new Xbox One X, but when I go to the store, Flight Simulator and other Xbox Series X/S games say they are "not playable on this device" and I can't get Flight Simulator to install on my brand new Xbox One X because it says it's "not compatible". Very frustrating.

So you bought an Xbox One X and expected to be able to play an Xbox Series X game on it?

Why would a game made for an Xbox Series X work on an Xbox One X?

If you want to play Xbox Series X/S games I would take your brand new Xbox One X back to the store you bought it and see if they will take it back and you could try and buy an Xbox Series S (Series X consoles are very hard to find, but a Series S can be found fairly easilly)

If you want to play PC games then you need to play them on your PC. If your PC isn't good enough then you'll need to buy one that is. You can't play PC games on a Series X.

Both my self assembled PC gaming tower and my Series X are connected to my new LG C2 OLED. I use either my Xbox Series X controller or my 8bitdo Pro+ for most single player PC games. You're not restricted to keyboard and mouse for PC games for the most part.

So basically if I'm playing the game on my X series she can't play it on the one series although we are on separate profiles correct?

Because I still have my original xbox one, I've decided to go back to using that so I can play all my games. I plan on upgrading to the series x when that comes out so it doesn't bother me that I can't play enhanced titles on the xbox one x because my
tv can't handle 4k anyway. Thanks to everyone that tried to help me fix my problem