Career change Watch
I'd look into your options for student finance & a loan. You can always get a part-time job to help. For example, I worked at Monzo and did weekend night shifts as a Customer Service Rep and earned £16,000/yr.
Also look into non-uni courses. Teach yourself through online courses, reach out to as many people as you can on linkedin and just ask to have a conversation, you never know what will happen and you literally won't lose anything from trying.
Wish you the best!
You are better off either working on your skills in your own time and then reaching out to small indie companies with the offer of remote work. But that's a sacrifice you'll have to make. It should be clear that the games industry is not half baked. My friend works for a big developer and when crunch time hits he barely sees his family and hitting milestones can be stress inducing beyond what your current job might produce.
If you are dead set on uni though I would reccomend doing games programming instead. You learn the skills to actually implement your ideas and your creativity is unlocked a lot more - plus programming language skills will serve you well if you get fed up of games development but want to remain in the digital realm.