Go to the Google Play Store and download AetherSX2 . It is currently the most optimized PS2 emulator for Android.
A raw ZIP file won't work magic. You need specific settings in AetherSX2: God Of War 1 Zip File Download - For Android
God of War 1 is notoriously hard to emulate. It was a launch title that pushed the PS2's "Emotion Engine" to its limit. To run it smoothly on Android, you need: Go to the Google Play Store and download AetherSX2