Is this normal? what should I do?

My fiancé and I had a heated argument where he abruptly hung up on me. Usually when we have an argument, the next morning we say sorry to each other. But this argument in particular didn’t make it to the “good morning let’s move on” phase. I of course texted him goodmorning and a few other things and he didn’t text me back. He completely ignored my message till like the next day where he just gave me a seen. Mind you, I’m in an ldr relationship and we’ve been together almost 4 years now and this is the first time this has ever happened. Usually I would give him validation but not this time, I actually gave him space for the first time, so for the next three days I did not text/call him at all. Fast forward three days later, he calls me and we talk but nothing about building each other up… no instead he started talking about how selfish I am and how I am so boastful (basically all of my flaws) yeah he started attacking me and I most definitely defended myself. So again another argument. So, what is happening is this normal in a long term long distance relationship?
Is this normal? what should I do?
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