If you are looking or a quality Game Boy Advance emulator, then use mGBA for Windows 11/10. mGBA supports multiple platforms.

PyGBA A Python wrapper around the Game Boy Advance emulator mGBA with built-in support for gymnasium environments.

To my knowledge, mGBA is the core currently used in Bizhawk, which is the emulator of choice that many RTA speedrunning communities point to, "Use this one, it's more accurate than VBA etc". I ...