It shouldn’t be needed because - from what developers have said - App Lounge gets it apps
- direct from Google’s Play Store, for non-FOSS apps. Some apps in the Play store are geo-restricted which may mean they don’t appear for you. This is the case in Aurora Store, and there is a known solution for that. I don’t know whether the same problem (or solution) is present in App Lounge.
- from F-Droid via cleanapk.org for FOSS apps. cleanapk claim to get their apps direct from F-Droid so, as far as I know, if an app is available in F-Droid it should be available in App Lounge
Which app are you missing? Is it available from F-Droid and / or Google’s Play Store?