Help on sleep mode not working on Big Sur or a sudden restart

Hello everyone!
MacOS Catalina was working fine on my laptop but after updating to Big Sur, the sleep mode doesn't work. It never goes to sleep and when i try to put it to sleep mode it suddenly restarts the mac os. Here I have attached the necessary files.
And also why the latest clover does not show the big sur boot volume rather than the preboot volume?
Any help would be so appreciable

Thanks in advance

Author: ayz9314