Hi! I'm not entirely sure if this is exactly what you're looking for, but I remember stumbling across an online school that offers UX/UI courses, including one specifically for gaming. I think I still have the link somewhere... Ah, here it is:
https://elvtr.com/course/ux-ui-for-gaming. Maybe you could check it out? I don't know much about the course itself, so it's probably best if you visit the site and look into the details yourself. Hope this helps a little!
