Brawl with my boss

It was a terrible day! At 7:30, like every day, I need to check the social media and read new news before starting my work, so at that time suddenly my boss came toward me and he started to admonish and insult me, but I told him I'm sorry. and I was keeping silent but he continue insulted me, then I lost my patience and I also started to speak loudly with stupid words, so he give me a penalty of three days off without basic salary.
When I went back to my home and thought about what happened exactly, I decided that I was wrong because the office is not a place of use mobile or chatting and it's not the first time I engaged in this bad behavior and I was need more patience. But I think he also insulted me more and more.
I feel regret about him.
But the good thing he give a penalty for only 3 days when I deserve more hhh.

[Good work.]