I think picking an arts degree is a terrible idea. Only do it as a second degree, just for fun.
If the only degree you have is an arts degree, you are lucky to have a job. And that job likely involves making soulless versions of your art content. You produce that just to get by. You will have no time, energy or inspiration for your true passion.
And, you having an arts degree makes you no better or worse or more likely to get hired than anyone else.
The only benefit is personal development. You will pay a lot of money and time, get a piece of paper that is worthless, you may have learned a lot less than you hoped you would, learned a lot you didn't want to learn. And now you have to take any job offer you get. No matter what garbage they want you to produce.
You may have no job and have lost your hobby/passion.
The only time you should get an arts degree is when your passion is so great, you cannot possible do anything else. And then you just hope for the best, because if you fail or succeed but are not lucky, you have nothing.
This combined with already having depression, that doesn't sound like a good idea. You may feel really good and inspired for 4 years. But what about after that?