Cancer is what it looks like if Adam & Eve got to eat the tree of life.
God made cells with the ability to die when there is an error, damage, rebellion etc Cancer cells are cells that attain “immortality” they will grow forever until they kill the organism. However God also made our immune system with the ability to recognise these aberrant cells and destroy them. He also made substances in plants that can induce cell death in these immortal cells or prevent them from accessing the fuels they need so they die.
Death is a form of Gods kindness and God has made provision on every level.