I used to hate android emulators, since the ones I'd tested on Windows were ad-ridden, slow bloatware.
The other day I needed to run an android app on Fedora 40.
I tried Waydroid and it worked very well. The app ran supersmooth as if it was running natively.
Also the cli syntax was very sane an user friendly.
waydroid app install|run|list ...
So if you need an Android app on linux the experience might be better than what you think it would be.
I got it into android "desktopt" previously, but now after rebooting and trying to install an apk it seems to no longer be opening at all. Sorry :/
Edit: I just uninstalled and reinstalled via the software Center and now it works and I could install F-Droid.