Loss of my brother

This is my first post. My brother died at the age of 48 a couple of days before Christmas. The funeral was about 10 days ago. I can’t pinpoint a word to describe how I feel generally. Sometimes I feel really lonely with it all. My relationship with my husband hasn’t been great for a number of years so I can’t lean on him for support. I have teenage children but they have their own lives and I’m not going to make them responsible for helping me through this. I’m angry about a few things and a few people, then I feel even angrier because those things are eating away at me and preventing me from just feeling the grief. I’m functioning entirely normally, doing everything I need to do, but I don’t feel like I’ve got time or headspace for this loss to sink in