I also use Garuda. While I wouldn't normally suggest an Arch-based distro to someone newer, the developers there did a pretty good job at making it more approachable and user friendly for people who aren't used to Arch.
The default BTRFS filesystem setup with automatic Snapper snapshots at each update also gives some extra stability insurance to the rolling release. If an update does temporarily screw something up (as very occasionally happens)--or you manage to do something to the system yourself--you can just boot using a previous system snapshot until the issue is fixed. Another reason I would recommend Garuda where I wouldn't necessarily suggest Arch or most derivatives.
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.)