Most graphics mods on MediaFire are not installed via the Play Store. They are installed manually using the following structure:
Delete the com.rockstargames.gtasa folder from Android/data , re-extract the Mediafire archive, and copy the files over again. Safe Downloading Practices Gta San Andreas Graphics Mod Android Download Mediafire
Running a high-end graphics mod requires more than the original game's basic specs. Most graphics mods on MediaFire are not installed
A port of the popular PC DirectX mod, this version brings advanced shader effects to Android, focusing on lighting and reflections. Incredible, modern lighting effects. A port of the popular PC DirectX mod,
This modification upgrades the polygon count for major characters and pedestrian models. Main characters like CJ receive realistic skin textures, high-definition clothing prints, and expressive facial features. Step-by-Step Installation Guide for Android
That being said, here's a general outline of the steps you can take:
Many graphics mods require a Cleo-enabled APK to run lighting scripts.