Yes it has GC. What is it that you want to build though? Will GC be in the way? If so, I would consider Rust instead.
C is simple, true – but in many cases it seems like that fact pushes the complexity up to higher layers instead.
C still has it’s place in embedded. And our best kernels are currently written in C. Outside of those domains I don’t see much reasons to start a greenfield project in C.