Made Account recovery key - Now I have to sign in on the browser.. But have to make new profile every time

I just wanted create Account recovery key to keep my account more secure. So I did that + updated my password. Now when I open the browser, it says account disconnected and that I need to create a new profile. I did that, but it started syncing from old chrome account with old extensions, bookmarks etc. Plus bookmarks from my phone. I try to sign in and create new profile with the original profile settings that I want. But it keeps saying "This profile was previously synced to a different account". And now that I saved the bookmarks and made a third, fourth profile. Those don't work as it wants me to sign in. Only the 2nd profile that Firefox made me create which has the old extensions, bookmarks etc. It is missing a lot. So now I am just stuck in create profile loop. And cant use the one I want because I wanted more security? Do I need to uninstall and install again, would that help? I wish there was someone to talk to help me. I just want to use my original profile that I used earlier today to update the security settings.