You have to make the choice quickly about whether to
1. Return.
2. Take a break.
3. Transfer.
4. Quit.
You sound in quite a good place and stable. Would it be that bad to defer for a year earn money and just get yourself together, then during next summer you cna decide whether to do 1.3 or 4. To do that you need to talk to your un/ tutor i immediately as well student finance.
If you do return, then this year will have a heavier workload. Theres still every chance you could meet someone else thats nice, but you need to be honest with yourself and avoid slippping back into some of the things that made you spiral downwards in the first year. You have to make an effort to be and stay on top of things. If you cnat do that then I would take the year off.
The worst thing to do is return and flunk your exams. This is especially so if you have aspirations for a legal career.
Transferring closer to home will depend how well you didn in your first year or you could start a course all over again. You might be able to get the fees waived because of your mental health problems.
If you decided to quit, then you cna always do Uni at a later date. the importnat thing is not to waste your funding.