Hi All, Need your suggestion.One of my close relative is suffering with synovial sarcoma(cancer) in stage4?

I know this is a lil harsh but everyone dies, and if its not now then its later. If its meant to be that he dies of cancer now, then he will. My brother used to have cancer once too, and he ped away, im not too sure how painful it is as i have never had it myself and i was only 11 at the time. But i know that chemotherapy is really hard, your relative will feel reallly weak and would just want to sleep as he/she will be really tired. My brother was in a lot of pain around the end time but i think that was becuase he had other problems at the same time.