abusive relationship

hi everyone. i would like some advice bc i’m very lost. i was in a 3 year relationship w someone that got extremely abusive. mentally and physically. i ended it almost a year ago. i have 0 proof of him physically harming me unless somehow i get a security tape at specific locations which seems impossible and not enough evidence. this relationship caused me to have EXTREME panic attacks, anxiety attacks and extreme agoraphobia to the point where i couldn’t be in public for more than 10 minutes without not being able to breath. i’ve never felt anything as extreme. i ended up in therapy and that didn’t help. the night i ended things with him he put his hands on me, choked me, bit my face, verbally abused me and damaged my car. I have no evidence of this besides a few texts and the damage to my car but i can’t prove it was him unless there’s video footage from any cameras (if any). there was one night that he pushed me during an argument and his neighbor called the police but he denied everything and they left shortly after so i’m not sure if that’s on record. after the night that i broke up with him, he constantly kept calling me from unknown numbers, his own number, fake numbers, fake social media accounts, etc. to the point where i had to change my number and go private on social media. i even found out he had placed a tracker underneath my car for an entire year. he was the only person to work on my car because he works at the dealership i bought my vehicle. he has forced me to have sex with him when i didn’t want to, he has come to my house on multiple occasions early in the morning to stalk me and he’s admitted that i’m just not sure if i have them in text(while we were together). theres also proof of him going to anger management, i’m not sure how i could get that evidence but it’s there. i went to the police to report the harassing and stalking but they turned a blind eye to all the calls and everything. i know it’s been almost a year since i broke up with him but is there really nothing i can do to feel like i got even a little bit of justice for all the pain and suffering i went through? i mean is it really just this easy for them to be free when they’re a danger to society? for everything i went through?