Unity and Unreal Engine are the only realistic options for 99% of indie developers. Yes, you can technically program your own game engine, but if you are asking advice for simple ways to make games, that is not the best option for you right now. There is a lot of really good education content for those two game engines. Most importantly, people use them to make and sell games.
More important than any particular route you take is merely sticking with it. The choice of game engine doesn't matter that much as long as you make and finish games with that engine. Everything else is secondary and mostly procrastination.
More important than any particular route you take is merely sticking with it. The choice of game engine doesn't matter that much as long as you make and finish games with that engine. Everything else is secondary and mostly procrastination.