I prefer Fedora but OpenSUSE is a great distro too, rolling releases just tend to need a little more troubleshooting and I really like the middleground.
Yes but it's on F-Droid so you can just use that too, multiple F-Droid clients have no issue coexisting on one device, I actually had both on mine for a very long time because I didn't care to uninstall one till I cleaned up again. ;)
Don't worry, you are in a technical place here on Lemmy and we where all shocked how many fell for that bs, feel free to rant cuz you won't find many crypto bros here! ;)
Most hardware works flawless in Linux, usually the worse thing that can happen is a propriatary Wifi or Bluetooth module but those are usually really easy to replace. Power managment isn't the absolut best tho so you will probably have a little bit less battery life over all.
If you need Microsoft Office on Linux I recommend the web version of 360 and if you want to pirate it on Linux I would go for a VM, it's not the best experiebce in Wine from what I have heared.
There are LineageOS versions and custom XDA Forum ROMs for the "Mi 10t Lite" but I can't find any with 5G in the name, are you sure that's in there?