Should I even care?

Should I even care anymore? It’s getting hard to keep caring about someone that lies multiple times. Is scared to communicate because he doesn’t want to do what I have planned. He tells me what he thinks I want to hear just to shut me up. I don’t understand what is so hard about telling the truth? Today is his birthday, we made plans to go fish, and here he is leaving his phone at work, ignoring me. Got me thinking he’s at work n shit. The same guy sees hope in the relationship but won’t let me get going. He won’t let me go. And your probably thinking wtf he won’t let you go? He don’t need too. Yes he does. If he don’t willing let me go, I know what will happen next. He will stalk, harass, and bother me. We share a baby together so you know there’s that. And of course why did I have a baby with him? My baby wasn’t planned like yours all were. He just happened with his low sperm count and my pcos. So yeah sometimes things just happen in life. But yeah I’m done trying to make plans with a person who is mentally gone. So help me, tell me how can I get away from this guy without being murdered? What is the best way to do this? I need advice please don’t criticize me either I have enough brain damage.