Install Praxi for Android:
Open Settings and, on stock Android, tap on Apps & notifications. (tap Biometrics and security for Samsung Galaxy Devices)
Next, tap on Advanced to expand it then tap 'Special app access.' (tap on 'Install unknown apps.' then click Chrome for Samsung Galaxy)
Next, access 'Install unknown apps.' and you can now see the apps that allow to install an APK file on Android. Click on Chrome.
Last step to prepare, enable the switch to 'Allow from this source' and you'll be ready to install.
Now upon the download being complete, click on the file and now you will be prompted to install the app.