I agree, Win 10 was no problem, I'm wasting a lot of time just to save my files!
Please see my earlier replies regarding the "read-only" indicator. I guarantee that has nothing to do with whatever problem you're encountering. That box is NOT an indication of the folder's read-only status. It's a control that will let you set the files within a folder to read-only. It's a poorly designed interface (that's the same on Windows 10 and 11), but it's not a problem.
Please provide details about the problem that you're encountering and maybe I can help. I will try.
P.S. I'm just another user. I'm not paid. I don't represent Microsoft.