For a truly "from scratch" and deeply empowering introduction to the basic notions in calculus (and all mathematics), I've found nothing better than Burn Math Class[1] by Jason Wilkes. It assumes nothing but basic arithmetic, and proceeds to guide you through how to invent maths for yourself.
or Calculus Made Easy: https://www.math.wisc.edu/~keisler/keislercalc-09-04-19.pdf