Grief/bearavement support groups for dysfunctional relationships?

I lost my father 2 weeks ago and my family is highly dysfuctional, so this loss is really complicated. I’m finding myself very isolated and unable to function. I looked into grief support groups, but I have a sense that those groups will have conversations around a loving bond with a deceased/lost one. That’s not the entirety for me.

I am wondering if there are any support groups for those who have experiences loss in dysfunctional relationships. I would appreciate any input from this group.