>>23233501
1. Download the roms (games)
2. Move the roms to another folder eg "GBA"
3. Download the emulator (Retroarch)
4. Open Retroarch. Download the "core" for Game Boy Advance (mGBA) in Retroarch.
5. Load the core
6. Load content (Navigate file directory to file)
7. When looking to play again game will be in history (3 lined icon next to home icon), and can be added to favourites.

Sword of Mana
(Site:)
https://visualboyadvance.org/sword-of-mana/
(Download link:)
https://github.com/vbaemulator/GBA-Roms/raw/main/Sword%20of%20Mana%20(USA%2C%20Australia).zip
or
https://vimm.net/vault/5808

Circle of the Moon
https://github.com/vbaemulator/GBA-Roms/raw/main/Castlevania%20-%20Circle%20of%20the%20Moon%20(USA).zip
or
https://vimm.net/vault/5150

https://www.retroarch.com/index.php?page=platforms

(I didn't read this but it may help if my procedure was insufficient or not understood:)
https://www.maketecheasier.com/retroarch-android-guide/

Metroid Fusion
https://github.com/vbaemulator/GBA-Roms/raw/main/Metroid%20Fusion%20(USA).zip