Thank you for sharing with this community. It takes courage to seek help.
From what you've written about your relationship you seemed to have been close to each other for a few years now. As many couples do, you also seem to have your share of arguments. You've said that what he says during these arguments hurt your feelings and even though you love him, you're not sure if you want to be with someone who does not see you as a supportive and understanding partner. I know it must hurt to hear these from someone you love and make you question this relationship. You've also mentioned that he is not interested to put in effort into this relationship. Is it because he feels you are not going to put in the effort too?
I can understand when you say you're confused because there seems to be no clarity as to where this relationship is going. You mentioned in the end that you have to either break up or fix it on your own. In a relationship where two people are involved, fixing it on your own will be difficult as you need to know whether your partner also wants to fix what has gone wrong. It's not for one person to take the burden but it takes the two people to make a relationship work.
Have you talked to your boyfriend about what you two want from this relationship? Before we try to fix something it is important to know what needs to be fixed in the first place. There does not seem to be any clarity in your discussion as to why you and your boyfriend keep arguing and why you feel that way about each other. A conversation to clear out both your thoughts and feelings about this relationship would help. Maybe you could talk about it more with one of our experts online who can help you work through this confusion.
I hope this answer helps,