Relationship falling apart

My boyfriend and I have been togheter for pver a year. At first, before we got to know each other very well and let our boundaries down, we were in a happy relationship.

But for the past months, everything started to fall apart. I am desperate and too attached to end it or accept its failure. We started having arguments everyday and having negative emotions. I cannot accept his bad parts so Im trying so hard to make him understand that some things bother me. He is really irresponsabile and he likes being like that. I dont feel respected and apreciated, sometimes not even loved by him, even tho I know he loves me. No matter how much effort I put into trying to help him get over the bad parts, he seems to not care. He makes me extremely angry with his disprespectful behaviour and his imatureness triggers my anger issues. I get very agressive verbally, and sometimes even physically. I feel extremely frustrated because I know how much love and affection I cand give, but he just makes it impossible for me to be a good girlfriend as I wish to be. I have been good to him and made lots of efforts to make him happy, but he does not do the same. It makes me feel sad and not apreciated. I can not leave him, even though I tried a couple of times. I miss him extremely much after and I can not take the pain. I really do not know how to handle all of this, we are both very yound and it is our first serious relationship. I really need help but I can not afford proffesional help, so I hope someone could tell me how to fix this , because I am surely not letting go.

Thank you very much!