Just Do It!
It’s another rabbit hole that you control how far you go down. You can dabble with a simple heat source, a cast iron pot, appropriate mold and tumble lube, or you can have 220v wired into your garage and melt your credit card. Once you start producing your own bullets and shoot some great groups you’ll feel satisfied. When you put venison in the freezer with a bullet you cast you’ll feel independence.
FWIW, My favorite mold pusher is: NOE Bullet Molds