That why we loss many friends but some will remain in your heart

I think you should take steps to prevent the harm from occurring again, whether it's physical or verbal. Reduce your contact with the person harming you, or eliminate contact altogether.

I strongly believe in "Karma", which means that whatever we do good or bad we will get it back that means if someone hurts you or does wrong with you then his or her Karma will hit it back. Sooner or later they will get same kind of experience and in turn, realisation of there mistakes, so if someone don't wrong with you just forgive them and move on.

It depends if it’s physical or mental harm. Physical harm I fight back. Mental harm- we have a choice to let criticism from other people harm us or not. It’s really about how confident you are about yourself, I think. 🙏

Instant I became aggressive and try to take revenge. But there is a condition if he is my friend then I do all these otherwise I just observing and handle it in the normal way.