There is no relation between forgive others or not, and doing mistakes or not, it is a matter of detachment of one's emotions.
It is the power to forgive.
And the biggest thing is that
I forgive them all
Who didn't even apologize to me
Or did not ask me for forgiveness
By apologizing and forgiving, there is an inner uplift of the jiva.I
t is a symbol of your greatness and not of weakness.
Should I apologize or forgive someone, both are independent actions, it is a matter of the purity of our mind, the matter of our peace.