I have a very similar problem... I'm a 32 year old mature student from Wales. Been studying sound engineering and music production since 2019. Did my two year extended diploma at college, then went onto an undergraduate degree at university immediately after. After four years of working hard, much of which meant working from home due to the Covid situation, I'm just completely burnt out on it all. I've lost all interest in gaining qualifications, and I would happily quit right now if it weren't for the fact it will cause problems with my grant and maintenance loans, seeing as I've already been paid in advance for the next semester.
I don't know how the finance systems work for the rest of the UK, but here in Wales we have to reapply for each year's finance (tuition, maintenance, grants etc) and re-enrol for the course with the uni each time. So my cunning plan is to stick it out for the rest of the year and just not bother applying for next year.