G3223Q, keeps going blackout for a few seconds

I've recently reinstalled my Windows 11 Pro OS and installed Dell Display Manager 2.

Everything has been fine lately. And yesterday I tried to switch to HDR from DDM2 and the screen didn't switch to HDR. So I disabled HDR again. Then I noticed that it was disabled in the Windows display settings. I enabled it from Windows and enabled it in Screen OCD. HDR came back on, but the Windows settings didn't recognize the HDR certificate. In my previous OS I can see VESA DisplayHDR 600 info. And then the screen suddenly started closing and opening again. I did a factory reset in the OCD menu and also reinstalled the firmware, but I still have this problem. In the diagnostic report before I did the factory reset, it said this:

"11-16-2024 20:12:10.189 13156 [changeStatus] Ready
11-16-2024 20:12:10.190 13156 [changeStatus]Dell G3223Q - Standard
11-16-2024 20:12:10.799 13156 [changeStatus] Ready
11-16-2024 20:12:10.800 13156 [changeStatus]Dell G3223Q - 5000K
11-16-2024 20:12:13.237 13156 [changeStatus] Ready
11-16-2024 20:12:13.237 13156 [changeStatus]Dell G3223Q - Sport
11-16-2024 20:12:15.063 13156 [changeStatus] Ready
11-16-2024 20:12:15.064 13156 [changeStatus]Dell G3223Q - Standard
///////////////////DDM log/////////////////////"

How can I fix this issue?