Yeah, that does sound like a lot of pressure (understatement I know). I can really relate to what you're saying (I came out of uni with a 2:2 and wish I'd done something with my hands instead) but I think you need to look at the good things that are going on. You have an interview next week so focus on getting yourself in order so you can do the best you can at that. What are your marks like at uni? If you're struggling with the workload have you thought about talking to the disability department about your mental health and the impact it's having on your work? They might be able to help. Do you have a personal tutor you can talk to about not having the placement year sorted out? I'm sure other people mess that up too so the uni should have a procedure for dealing with it.
I know when you're feeling crap stuff like the amount of debt you have and what your friends are doing makes everything worse but regrets don't change anything. If you're really not enjoying university you could always drop out and do the apprenticeship instead. Obviously you'd have the debt but you don't need to pay it back until you're earning above a certain amount so while it's not ideal it isn't the end of the world. Not that I'm saying dropping out would be a light or easy decision but if you're truly not happy I think you should pursue happiness and what you want rather than what you feel you *have* to do.
I don't know if this is helpful at all, just my view. I hope things work out for you at the interview or whatever path you take.