S21 Ultra Back Camera Blurry

[Mani_S_series]

Whenever i use my s21 ultra camera it looks so blury it basically like that from day 1 i tried multiple YT tutorials some worked __SLIGHTLY__ But then back to same blurry mess 

If anyone can help it would bw much appreciated

[Mushi123]

Clean the back camer lens

[Mani_S_series]

Not to sound rude but dont you think I did that (commonsense).

[ubaidrashid4]

I am also facing that , after restarting , it goes fine for a while, But it again becomes blurry, it is prominent at 2.9x , or using pro mode for full zoom at wide angle(108MP)
I think it's the software problem as I have changed that through SamMobile softwares
I can't change the software again right now , as it's hell of the tasks to bring back everything.😮‍💨