Xbox sent in for repair, wasn’t fixed

I was having a problem with trying to play games on my series X but almost every game has flashing lights and rainbow colors all over instead of how it’s supposed to look. I sent it in to be repaired but the issue wasn’t fixed at all and I still can’t play most of my games. I’m very disappointed. I opened red dead redemption to test it out and when the gameplay happens it’s a black screen. Other games are still very very glitchy and have rainbow colors and flashing lights instead of how it’s supposed to look, just like before I sent in the Xbox. I waited a week just for it to not be fixed at all, and if anything it’s gotten worse.

:)