Feeling genuinely lost

Hey everyone, on a burner account because I just need to get some things off my chest and possibly get some advice. To start I am 20 years old, I lived with my now ex girlfriend for about a year and we had moved in quickly. I had my own apartment and so did she, she quickly began spending copious amounts of time at my apartment rather than hers. As we spent more time together we would often get in arguments sometimes very serious arguments where one of us would leave and we would not speak to each other. Well we both made the young dumb decision to get a place together, with both of us on a lease, this happened in June. As of yesterday I decided I was done and over with the toxicity, we argued what felt like constantly about insignificant things that were not changing and it felt like nothing was ever going to change. Now the breakup isn’t what is hard, at least not right now. My concern is how to navigate this process, we have a lease together, I have 2 cats I need to make sure I have a home and I am almost regretting this decision because I feel as though I did not think everything through. I have left the apartment I have been with a friend and will be staying with my mother for the foreseeable future. Currently I feel like I have 2 options.

1. I continue to pay her my portion of rent and she keeps the apartment since neither of us can afford to break the lease

2. She can afford the rent on her own and she just takes over my portion of the rent still keeping the apartment and pretty much all of my belongings, Tv couch dishes microwave etc… this is the ideal option in my opinion because having to pay her rent for the remainder of the lease will put me in a bad position where I am unable to save any money to get my own place.

Either way this goes it is going to be hard and I am aware of that this decision wasn’t easy to make but it needed to be done, I was miserable in the place I was supposed to call my own, I was growing resentful of my ex to the point where I didn’t want to be around her. Yes I know you will all tell me this was the wrong decision, I am well aware of that I should have never moved in with her in the first place, I am going to learn from this experience and use it for my future, I am ready to put me first and feel happy again.