Earlier last year, I stumbled upon this blog post: I'm not sorry
Main take away: you should cut down the amounts of saying sorry and only use it when you feel like you didn't act accordingly to your values.
Many people say those three words (I am sorry) way too often in a context they are not even responsible for the situation. Like when it is actually someone else's fault, but they still apologize for it. Situations could be in a work environment, but also in the personal life.
On the other side, you should acknowledge when you messed up and sincerely admit it.
With that we come to the next step: If you follow this mindset it depends on how often you don't act accordingly to your own values and that amount should ideally cut down to 0.
In an ideal world you are in inner peace, have your emotional state under control and are not influenced by external triggers. That doesn't mean you are unaffected by them, but that you are aware of them and know how to handle them. Like when you had a really bad day, come home and get angry at your partner because of an misinterpreted behavior in which case you would usually just ask what she/he meant, but not this time. Afterwards, you honestly feel sorry for how you reacted and should say it.
However, that should happen in the first place and comes with a lot of work.
Get to know yourself, reflect on previous situations, acknowledge your emotions, don't judge them, and learn how to handle them - so you don't need to say 'I am sorry' ever again.
Final note: I personally don't value when people say they are sorry that much. I rather want them to just acknowledge and admit if they messed up and instead of focusing on the past, work on that it won't happen again in the future. That way we can both take a step forward, as I won't hold any grudges against someone who is straight about her/his actions.