My brother’s death

I just lost my only sibling (brother) 2 months ago to brain cancer. We only had found out he has cancer ayear before that. It all happened too fast. In the past 2 month i was like a robot trying to organize ceremony and help parents and take care of his stUff. Now im in so much pain. I miss him so much. I have so much to do but I cant get out of bed. I feel giulty that i did not do enough to keep him alive. I now know what depression is  i gave him cigarettes once in a while while he had Pulmonry embolism. He would beg or a smoke and i just didnt know what to do when he was so dedperate for one. He dies from his lungs collapsing after being at hospital after 3 months