Do not blindly install random APKs. Use these verification methods:

Wait for a sale on Play Store (often $4.99–$6.99). It’s worth supporting Rockstar.

If you choose to manually install Bully using an APK and OBB data file, you must verify the files and know exactly where to place them. Here is your official, safety-focused walkthrough.

If you are installing manually using a downloaded ZIP or separate files: Bully Anniversary Edition On Android is FINALLY FIXED!