Download the zip file to your device. Use a file manager app (like ZArchiver or your phone's native file manager) to extract the contents of the zip file.
These are third-party sites that repackage paid apps into .zip files claiming to be “free” or “better” versions. Risks include: Gta San Andreas Apk Obb V2.00 Espacioapk.com.zip BETTER
The correct manual install path (no rooting required): Download the zip file to your device
Internal Storage/Android/obb/com.rockstargames.gtasa/
Inside that folder → main.2.com.rockstargames.gtasa.obb (filename varies by version) Inside that folder → main
Note: Many “BETTER” versions require disabling Google Play Protect and allowing “Install from unknown sources”.