won't install due to unknown error

[nathgit]

Every time I try to install I get a message download failed due to unknown error.

I tried several times through f-droid as well as through here (the latest version in both cases), both with an error. The last time it said something to the effect of it being unable to parse something (sideloaded through FX).

Install space isn't an issue, because I just installed a different app through the play store.

I use FX file explorer, & unknown sources is checked. I've sideloaded apps many times with no issues.

I also just installed another app (pincredible) through f-droid in the last few days with no problem.

I don't know how to disable play protect, but I'm not sure why it would be causing it. Like I said, I had no problem with "pincredible".

I don't remember what the specs are on my phone, but it's a moto gplay 2021

[sz3]

Do you know if it's running 32-bit Android? I know some Motorola phones come with a 32-bit OS (even though the CPU is 64-bit)...