How are you dealing with aggressive behavior?

I'm a FTM so I'm not sure what I should do, but when my son is upset (when I take him away from something he shouldn't be playing with, for example) he starts crying and gets very upset and start getting aggressive/violent (hitting, scratching and pulling my hair). I'm not sure where he is learning it from, as we have been quarantined and away from people for 2 months, and do not act aggressively in front of him, or watch anything violent. I'm not sure how to let him know that it's wrong. When he would do that, I would tell him No in a calm but stern voice, and be obviously upset (I am usually very playful with him) and he ends up crying harder. I'm not sure if that's the right way to show him that his behavior is wrong, or if I'm doing it wrong 🤷🏻‍♀️ if someone has gone through this before and have tips that worked for you, please help. TIA