Downloading files

Not a single application (APK) is downloaded, emails in the mail do not open, what should I do? Without this feature, it’s just a brick
Logged into Google account, but faraday does not appear in the list of devices and APKs are not installed from the play store
It’s good that Android is “naked”, but how to install what you want? Files are not downloaded from nowhere, it’s just a disaster and wasted money, but I wanted to make a video about Radxa zero.

It was possible to install the APK only through the SD card

You can install the LineageOS from Zero with gapps.