People use the word to mean different things, which is confusing.
For me, forgiveness means I don’t blame someone for an honest mistake they made, or hold them accountable for hurt they may have caused unintentionally. I find it relatively easy to forgive people who have been tactless, clumsy, or forgetful, for example.
Sometimes I’ll feel hurt or disappointed by a situation, even though nobody has done anything wrong. E.g. say I’m competing in a sports event and my friends aren’t able to be there to support me. There’s nothing to ‘forgive’ here, as I have not been wronged. It’s my responsibility to deal with my feelings about it.
Anything else falls under the category of ‘distancing myself from people whose behaviour I don’t like, and not wasting my energy trying to get them to change or see my point of view’.
This is a lot harder for anyone with serious trauma, and/or for people from families or communities that exert a lot of pressure to put up with all sorts of bullshit because ‘family is everything.’
On the other end of the spectrum, something I see a lot on MN is people clinging on to an absolute refusal to ‘forgive’ something minor that’s hurt their feelings or their pride - like not being invited to a distant cousin’s wedding - because they feel it gives them power and they want people to grovel to them. This always seems like such a fucking waste of life to me.