What I found helpful, when dealing with my late mother's cancer, was the Canadian Cancer Society, who gave me information not otherwise available.
I meant to mention this last night.
Mom had a rare cancer, but there is much research on lung cancer, which will help you understand better. Nurses hired by governments to make house calls vary with their expertise, as do individual GPs. There is much research and data out there. Much of it cannot be read by all family physicians. The oncologists are reluctant to give us information.
They sent my father and I home from a 2-hour trip to their offices, with a statement that his brain tumour was fatal, and there was nothing they could do. Full stop.
I didn't know what to expect, including the dementia, and the incontinence, and his behaviour changes. yet, the information is out there.
The ambulance drivers, who took us home, were most gracious, more so than the ocologist and the replacement oncologist she left us with before she went on maternity leave.