Am I wrong ( Breaking up w bf)

I’m 19 years old and me and my ex were together for 3 years + , I broke up with him on the force of July when I was angry but it’s was more of my last straw for the relationship, before this I reach out to him and talked about how I didn’t think I was inlove anymore and was moving out when the lease is up in October .. he agreed but keep in mind this man has never done anything wrong to me really, he’s treated me very good and same from me to him ❤️ but I just can’t have those feelings anymore, idk if it’s me being young and wanting to experience life bc I started dating when I was 15, he’s my first and only bf etc but honestly I don’t want another relationship, I want freedom and being alone, I’m super depressed, have bad anxiety and have bipolar disorder, now that I’m talking about when I’m moving out etc, he’s mad at me and saying he didn’t think I’d leave him fr , I’m the bad guy ik, but I don’t want to be , it’s just me speaking my mind and communicating without leaving him unknowingly and being a shit person, I just don’t know how to leave without breaking him and our entire friendship, could I get some good advice of this pls?