Despite all your ‘problems’ I would like to ask why you decided to go for a X?
And why at all use it with Sailfish OS?
I spent a few minutes on jolla-devices.com and found that quote
Sony Xperia X is the ‘baseline’ model to be chosen with a ‘google-free’ use in mind: its outdated 4.4. support (to buy apart at 49€) do not worth the expense.
Why not a newer one XA2 or X10 with Android 8.1 support?
Here
would have been the answer regarding free and licensed OS.