I personally found university to be very challenging. I did at times feel really tested on how to prioritise tasks, being organised and managing exams, especially when past papers aren't always reflective of the actual exams. Coursework deadlines set a couple of days before exam season doesn't help. At times it can also be stressful when you have days of back to back exams and sometimes a couple exams in day, continuously. Just note that this is based solely on my experience and everyone else will have a different experience based on their degree. Also, if you're doing a degree on something you're really passionate about, then it will make the journey a lot easier of course and will feel less like 'work'
I always found that there is plenty of support available at university. I struggled a lot with mental health during my time at university as I was also grieving the loss of my dad but speaking to people at the university really made such a difference. Support is there at all time, just ask. Speak to friends, speak to your personal tutor, speak to any lecturers, speak to any counsellors and they are there for you.
In terms of the actual degree, I felt like It's a balance between maintaining a social life and keeping on top of your work. It is very do-able though. The case where most people fall down is that they get into bad habits and not having a structured approach. Especially if you move out of your parents home and you have all this new found independence.
Looking back, I would advise to my past self to treat my degree like a job. Which means maybe spending 9 am - 5pm or so Monday to Friday towards studying, including in here attending lectures/seminars, maybe doing a tiny bit of work on the weekend if necessary. I think if you had that structure and organisation in your uni journey, then things will be a lot more smoother for sure. It's a skill in itself. If you can maintain a good routine for uni and build that habit early, then you'll definitely increase your chances of doing well.
I hope this gives you some context. Degrees totally depend on where you study and the type of degree you do. I studied at a Russel group uni and did Engineering, so it was quite exam focussed, where as other unis may be more coursework focussed, so it does depend.
None the less, keep a positive state of mind and I'm sure you'll ace your degree in whatever you choose to do it in if you do. Don't tell yourself you can't do something because I'm sure if you put your mind to it, I believe anyone can achieve what they set out to.
Hope this helps.