godot (the game engine used) doesn't support older graphics api so you're out of choices
Last I checked, Godot supports WebGL, OpenGL 2, OpenGL 3 and Vulkan. I think it supports the android *gl thing as well. The trick is that the gamedev has to tell Godot which ones to support, and it's not very convenient. (he's put in the work though - there's a .bat script)
Further resarch shows you're right OpenGL 2 is no longer supported.