No Sound in MacOS BigSur post installation

After carefully reading the guide for two days and watching a couple of YT videos I triple booted my HP Pavilion Power Kaby Lake i7700 HQ laptop and all basic things are working fine except for Sound and my external USB Mouse( I haven't mapped USBs yet so that's why I guess). I have tried all boot-args alcid on post installation guide for my audio codec which is Realtek ALC295 and yet I can't get my Audio and mic to work. Should I downgrade to Catalina to solve this or is there any other solution?

submitted by /u/SheikhAsim
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