Write down everything you are angry about
Grief typically involves sadness but it can also come with other complicated feelings like for example anger.
Maybe we are angry with ourselves, maybe we are angry with other people connected with our loss or we could even be angry with the person that is gone.
There can be many reasons for this, things we did or didn't do, things we said or didn't say. Things other people or the person that is gone did or didn't do or said or didn't say.
It can be complicated. And to make it even more complicated, whereas sadness is something that other people expects us to feel, anger isn't. Which means, even those who want to support us may not know what to say or how to help us when we are experiencing anger.
Please know that there nothing wrong with this and you are allowed to feel your anger.
One thing you can do is grab a piece of paper and write down everything you feel angry about. Write without leaving anything out. After you are done you can burn the paper if you like. Do this as many times as you need to.