Question Windows 10 to 11 issue

I am currently using Windows 10 and I decided to switch to 11 (got annoyed of that full screen warning Microsoft keeps popping in my face about the EOL of Win10). My motherboard supports Win11 but it appears that my pc doesn't meet the requirements, most probably due to that BIOS settings.

My question is, if I change my BIOS so it can auto-update to 11 without having to format the pc or anything (I have huge files I need) will I still lose my files? I think I've read somewhere that I may lose them all.