Did I make the wrong decision by breaking up, or am I just feeling guilty?

I'm a high school student, 10th grade, and I was with a guy for about four months. I liked him last year too, but we were both with different people back then. He texted me on April 1st this year when I wasn't looking for anyone, and we started talking. He was really nice, but there were also a lot of red flags. At the same time, I know I'm not perfect either. There were things that I did which I probably wouldn't have liked if someone else did them to me. One thing that bothered me was he had liked and dated quite a few girls before me. He sometimes talked about two girls he had really loved. I don't think he meant to make me feel bad, but I don't know if he was completely over them. Today I had some family problems. Earlier I had texted him saying I'd reply later because I was busy. Then the family situation got worse, and I told him I just wanted to sleep. He said 'okay', but I could tell he was upset. I called him, but he didn't answer. I thought he'd understand because he'd gone through similar family issues before, but I felt like he didn't. Later we argued and I ended the relationship. I was so overwhelmed that I even started removing myself from WhatsApp groups and thought about deleting my WhatsApp account. After that, he started texting me normally. He apologized, and he was begging me not to leave. Even when we fought before, he would always apologize. I do think he cared about me. Now I feel like maybe I overreacted. I called him afterward, but he spoke to me quite rudely. I don't know if he had already given up or if he was just hurt. Now I'm feeling really guilty. Part of me wants to get back together, but I'm not even sure if it's because I truly want the relationship back or because I feel guilty for hurting him. If we got back together, I honestly don't know if anything would be different. Did I make the wrong decision?

Am I just feeling guilty after the breakup or should I try giving the relationship another chance?