My life/ career is a dead end, how do I turn it around?

I (22f) don’t know how to pick myself up, I’ve been on a downward spiral for year’s and I just had the realization that my life and career as a whole right now is a complete dead end, and I’d like to know what you would do in my shoes.
I’ll try to summarize it the best I can. In high school I had so much potential, I made great grades, was a talented artist, had friends – I could’ve gone to college anywhere but I chose a university near my hometown because I wanted to be close to my then bf (who broke up with me the first week of classes).
After that, Covid hit and I moved back home and did classes remotely for a year. During that time I had something traumatic happen and I lost any ambition I had. I got back to college and kept taking remote courses because they were easier, and started dating a guy that I met working at a shitty restaurant nearby. We’ve been together over two years now and I love him but he has no direction, he still works at that same restaurant and has no interest in college or a career.
I graduated college a few months ago (somehow magna cum laude) but still with nothing to show for it, no network or connections made. My major was journalism – I meant to switch to something else and I just never got around to it. I got a job at a used vehicle dealership and that’s where I still am.
I’ve gained so much weight in the past 2 years and I just feel like I’ve been in a massive free fall.
It feels like I just woke up from a 4 year coma and I can’t stop thinking about how badly I’ve screwed myself over. I desperately want to fix my life and turn it around but I don’t know where to start. How would you do it if you were me? I’m thinking of graduate school but I still don’t know what I want to do as a career – truthfully I’ll do anything I just need to have a good amount of money coming in.

Also, I know that I’m responsible for my own choices here and I’m the reason for where I am today, so I’m taking full accountability – I just need help turning it around.

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