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)/¯
Seconding this. I’m also using Infomaniak here with my own domain, and would definitely recommend it. Their free tier comes with 15GB cloud storage on top of the 20GB mailbox cap, which is better than a lot. I’m more focused on data privacy these days, and haven’t seen anything concerning about their service so far.
Infomaniak offers their own mail app for Android, but the accounts are easy enough to set up over IMAP in whatever client you prefer. I’ve been favoring FairEmail personally. The same developer is behind NetGuard, which you might also find handy if you’re on stock Android. (I’m using GrapheneOS now, which already has app network access control covered.)