Hello,
Sorry to hear you are having issues. Have you tried this:
Open Control Panel> Click Hardware and Sound > Click Power Options> then click Choose what the power buttons do > Click Change settings that are currently unavailable> Check Sleep (or uncheck then check it again) Click Save Changes then restart.
Taken from: https://answers.microsoft.com/en-us/windows/forum/all/on-my-windows-11-laptop-the-sleep-option-simply/25ecd03a-6cfc-4e50-8247-608e48434e48.
I tried it on my system and it work.
Basj,
Stardock Community Assistant.