Making games using c++

So, I'm a c++ programmer and I would like to start making some rather not extremely complicated phone games because I've got some ideas.

I know nothing about making games and I don't really know what to do. Can I use c++? I know that c# is used in unity and I don't really want to learn c# now, perhaps in the future. But I think that I should use game engine.

So, could anyone point me a way?

That would be great, thanks a lot.