You’ll come away fighting off the idea that it’s a sentient adversary with a much better understanding of biology than our own. The complexity of the environment it operates in is already astonishing, and then number of tactical mechanisms it employs to thrive in a healthy body seems one tick shy of statistically impossible to stachastically occur.
When you get cancer you encounter cells that through natural selection developed to beat your immune system so they've already essentially discovered every trick in the book and when you attack them the cells that survive are those who wrote a new book to do so.
Things like tumor escape mechanisms aren't sentient they are just random things that cancer cells attempt and you only see the outcome of those that worked.
Basically a cancer cell might start shouting "yo bro you should totally try this..." and other cells that receive the signal and capable of doing that action might just happen to try it, in fact in some case this is just how you get cancer, one cell starts yelling chug chug chug and all the other cells around it get hammered.
You're a gift to horror/sci fi writers.
Hope that helps