You have a looooooooong way to go my friend.
Yes, you can make games with tools, but they aren’t going to rival current games. If you want to learn how to make games, learn how to program. Learn C++. Learn it well. Then, once you have mastered that, you can add DirectX or OpenGL. Basically these are graphics APIs which provide developers fucntions to do common 3D graphic routines (like plotting pixels, drawing polygons, matrix math, etc etc) They are there to render polygons and calculate the transformations. That’s all they do. Well, DirectX actually does more, like networking, inout and sound.
So, learn C++, learn object orientated programming and design with that, then decide: Do you want to program the graphics engine, the AI, effects, etc… then choose the path.
It’s a long road, trust me… I’ve been there and I am still walking it…