Toxic relationship

I am dealing with a toxic relationship and its just a lotttt i am not able to concentrate on anything i cant study and feel adrenaline rush 24/7 . My significant other doesnt care bcz i made some mistakes in our relationship i just couldn't love that person the way i should bcz we have understanding problems ,our thinking is not same which was the major rsn for all our fights that person never understood me and always blamed me for everything and tried to control me which he still didn't realise and will never do...but i told that person about my feelings which affected that person mentally too and now that person changed like so much or always like that i just didnt know ...that person didnt let me breakup ... And i no longer feel safe in this relationship when that person gets angry even a bit i feel scared ...also tells me everyday that i made that person like this i deteriorated his health and my health is deteriorating too now and i just cant take it anymore i just want this to be over i also want to help that person ...also want to tell that this blaming doesnt help i just want this over with i just dont know how....i mean relationship don't work something but it should not be the end right? I still try to think positive but it is getting difficult now i just want some guidance on what should i do or does anyone going like this too...