Should I ask my ex for closure?

He broke up with me about 4 months ago. I went on no contact but he tried contacting me a few times but was never consistent. At one point he said he wanted us back but I said I was fine on my own and he hasn't texted me again after that. To be sincere I thought he'd fight for me, give more effort but that was it a relationship of about 2 years just ended like that. I imagined he'd care enough to apologise but he never did, he only said he took responsibility of making the decision. He broke up with me several times and I kept coming back because to me it was him I guess. When he dumped me he said I complained he hurt me too much and that I had attitudes that he didn't want in his girl. Why didn't he say that from the beginning. Now I've got lots of questions and suddenly I need answers. Do u think it's advisable to reach out to him?
Should I ask my ex for closure?
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