https://github.com/SubhamTyagi/openinwa (I recommend downloading from f-droid)
Good thing the EU just outlawed that model and forced everyone to support "third party app stores" that are thinly-veiled shells for Facebook/Google/etc to bypass that review process.
the "I wanna sideload" crowd are nothing more than allies of convenience for FB and others. Facebook was already experimenting with getting users to manually sideload the full-telemetry build and now they can just say "oops not supported on safari, install the native app".
https://arstechnica.com/gadgets/2019/01/facebook-and-google-...
The sad thing is that all their details and yours are already known to Meta.
The dozen of us who behave like you will keep trying though.
One for work, one for personal use, and one burner for stuff like this. It has little more than the base OS, a few intrusive apps, and some minimal fake PII.
Also handy for providing a "valid" phone number I never have to deal with.