Hi james310 - it certainly sounds like you've had a lot to deal with so it's great to hear you're keen to explore uni and push forward with your ambitions.
Although you feel like time is slipping away from you, you don't need to rush this at all! Lot's of people end up delayed going to uni - you only have to take a look at lots of the recent posts in this forum to see loads of applicants who have taken a year out to resit exams, or taken a gap year, or trying to renter uni after dropping out. You'll spot some users also struggling at uni or looking to transfer so it's important you take your time on this.
Have you been to any open days? (some places are doing extra ones in Jan..)
Have you looked at some business specific league tables?
Don't worry too much about RG unis. There are some fantastic non RG unis out there.
Are you wanting a campus or city vibe? These things can be just as important as rankings so you're happy on your course and settled.
Are you looking at unis within a specific location? Let us know what unis you might consider after you've thought about the above as they might have an ambassador on TSR and you can chat with them directly.
Final note, we are all on different timelines and that is totally fine! I went to uni as a mature student and I'm not behind at all. In fact I'd say I'm 'ahead' of some of my mates as I ended up doing something I was actually interested in when I was ready.
Good luck and let us know how you get on 🙂