I'm at a loss

I don't know what to do anymore. I want to be with this person but we don't have a good relationship. He says he cares but he doesn't make an effort even though when we're at our breaking point he begs and says he will. It has been getting worse for months now. I'm at the point where I'd rather be alone. I'm at the point where there's no point in speaking to him (bc he always argues or just doesn't listen). And because of that I'd rather not listen to him. I don't believe 60% of the things he says because he's clearly all talk. There is no trust as far as when he says he's sorry or talking about what he supposedly will do. I love him as an individual but he let's me down every day. I am a good communicator. It's important to be but I just don't try anymore because it's the a same thing every week, every day.

He knows I'm depressed and suicidal at times. I feel so worthless every day knowing that nobody cares about me. How can I fix all of this? How can I make us better again?