This is not medical advise, everyone is responsible for there own well-being.
Nobody has or will survive chemotherapy, signature to it is a certain dead sentence.

Eat healthy, preferable without cooking like heaps of fruit and vegetables, salads.
Drink pure water (distilled), get lots of fresh air, like country side. Back in the old days rain water was pure and fresh rain water was good, now is all sorts of stuff in it.
Research MMS (Master Mineral Solution) its cheap and effective.   https://jimhumble.co/