Air brush painting with a two stage air brush, so you can control the air and paint independently, is the way to go.
Using one is like learning to throw a baitcaster, a learning curve that is doable.
Buy a good brush to learn with, and you'll continue painting. A cheap brush that doesn't perform can be discouraging.
Go onto the air brush websites and check out their free videos, especially on how to clean an air brush.
Air brushes have tiny passages that the paint is forced through to get an even spray, and those passages can clog easily and stop your brush from working.
Clean brushes work, dirty brushes don't, no matter how much you pay for them.