Anbox has never worked without a lot of hassle for me. Their images are quite old and if I remember correctly, do not offer arm support, so even if you manage to have a working playstore odds are a significant number of applications would not run.
There are, in my opinion, better alternatives worth considering depending on your needs.
- Waydroid is a more up-to-date version of Anbox for Wayland. Does not support Nvidia cards, so it would need to run on iGPU or software rendering if you have an Nvidia card. Small config required for this, it is available on their Wiki I think, but I cannot find it at the moment.
- Genymotion is an Android emulator for Linux with an easy click-to-install open gapps (google play services). It does however have a watermark at the bottom for non-paid users. There is also a flashable arm translation available so you can run apps requiring it as well, simply drag and drop over the emulator window.
- Gnome-Boxes (or another VM) with BlissOS. No watermarks, comes with play services. I could never make the 14 image work, but the 11 one runs perfectly fine.
My personal recommendation would be this: If you don’t have an Nvidia card, and you’re running Wayland, go with Waydroid. Otherwise have a look at BlissOS.