I don't really have much advise to offer, sorry, but I hope I can offer some comfort in saying I can relate to this SOO much. I absolutely loved university, the social aspect of course but I enjoy studying too. I also spent the summer after uni with my friends in my uni town and so I felt like I crashed from a massive high. These past few months I haven't felt like my best self, I felt such immense pressure to decide what I should do here and now. And it's been super tricky with covid always changing the climate. I also live in Cornwall, so that also makes it tricky to see my university mates and is basically a no go for the mo. I have however tried to view this period, as a lower point of life. Life is always fluctuating between highs and lows and it just means something better is coming. I also recently heard someone relate to highs/lows of life with the analogy that "in life you have periods when you're running (super busy, social, go go go) and other parts where you're walking (slower pace, not as many things going on). Use those slower periods to recharge you for the next running stage.