What were the ways to make a fire in ancient times?

Drilling wood for fire, flint for fire (that is, striking with stones like flint to generate sparks for fire), skyfire (lightning strikes trees to generate fire), and ground fire (volcanic eruption magma ignites fire).

Skyfire and ground fire should be the earliest methods discovered by primitive people. They ignite the fire by the flame generated when the sky fire (ground fire) occurs, and obtain the continuous fire by preserving the fire.

PS: Primitive people didn't need to drill when they caught fire, but they had someone to put it out after the fire.