Sorry your feeling like that. Obviously each person's situation is different and a stranger can't tell you how you should feel. But just in terms of the specific issues that I can comment on:
On the jobs/career side, there are a lot of voices who will tell you a degree is a waste of time because you'll have a low-paid job after uni, but this is a very old trope and the bigger picture is that having a degree will stand you in good stead in your career in the future. This Kevin Carey piece nicely traces the history of this idea - which is something people have been worried about for at least 50 years, but in the long run having a degree tends to help your career even if you find yourself doing a low-paid job you don't like straight after uni (it's about the US context but things are pretty similar here:
https://www.theatlantic.com/ideas/archive/2023/12/myth-unemployed-college-grad/676364/).
Aside from careers, the real benefits of doing a degree for me were probably things it's hard to see up close, and a bit intangible. You probably don't notice how much better at thinking, reading, interpreting, critically analysing, etc., you are now than when you started uni. But if you reflect on it, if you're anything like me, it's probably: a lot. It's not the sort of thing that gives you an instant pay-cheque but you will be glad in years to come that you're smarter than you would have been.
None of this is to take away from whatever else you're feeling about it, just a few thoughts.
Wishing you all the best,