I can confirm that Nova Launcher is not the issue - works fine also on my tablet. Authenticator is the the one and only app from Google I have installed. For Youtube I use the NewPipe app. I re-flashed the ROM (plus microg)...
Maybe it is possible with an SD card, like this:
Create folder 'tf101' on SD card;
On your tablet, from the Android terminal, copy the following files to that folder:
Google Play Services started to crash on my tablet too :/ I know it's extremely old, but because of this kind of stuff my next tablet definetly won't be one with a Google OS...