AI is not doing most of character's moves

[STM1993]

I have no idea how to do EXE edits myself, and its much harder than AI scripting or changing ids.

Check AI Scripting.
There is unfortunately currently no way to copy an AI from another character from the ddraw script itself, but fortunately you don't have to write every single function of the AI, you only need to write in the conditions for them to use their special moves.

You can search for Nyamaiku's "Jackass" for a very good example of a simple ego AI, which still calls on the basic no-move AI but gives him special move behavior that resembles original LF2's.