I have found Mozilla’s sync across devices handy, but now I’m in the process of moving over to using Vanadium on my GrapheneOS phone and FireDragon on desktop.
FireDragon started out as a Librewolf fork, but is more recently based on Floorp. They are still keeping in sync with Librewolf’s privacy enhancements, with some of their own thrown in. I like that the default search engine is Garuda’s instance of Searx, with Whoogle as another option if you don’t want to self host. FireDragon will also sync your Firefox account off Garuda’s server instance if you like (which would be more useful if I weren’t going with a Chromium fork on mobile). The Garuda project is certainly looking more trustworthy than Mozilla these days.
I was in a somewhat similar place when I first got a laptop with Windows 11 preinstalled. Decided to dual boot, set Windows up with strictly local accounts, and actually poke around in there out of curiosity.
Tbf, the last time I was regularly doing anything in Windows was during the Vista --> Win 7 era. This did not make 11 any more approachable or easier to get even very basic things accomplished. I didn’t like the UI (still don’t), and kept getting frustrated at those “little” things like the Bluetooth codec issue you mention. Haven’t even tried to do much gaming on that side, to compare, other than a couple I couldn’t get working properly through WINE/Proton. (A couple of other software packages too.) So I ended up rarely playing those, and only booting into there at all once in a blue moon.
I did recognize that a lot of that frustration was on me and my expectations, though. Doesn’t mean that I still don’t want to have more control over basically everything about my system. I probably could make even modern Windows work better for me, but why bother when I’m already happy enough elsewhere. ¯\(ツ)/¯