Incorrect OBB placement or corrupted download. Fix: Delete the entire com.rockstargames.gtasa folder inside Android/obb . Re-extract the OBB file. Ensure the OBB is exactly named main.8... (not main.7... ). If you have an SD card , move the game to internal storage ; Android 10 hates running large OBBs from external SD.
If you're interested in learning more about the process or if you have a legitimate reason to obtain the APK (noting that you should support developers and purchase the game through official channels), here's a general guide: gta san andreas para android 10 apk
Do not open the app yet.