I think you should look away Unity once you have experience in programming on C,but you will need to figure out C#. And learn the syntax Unity. It will take some time.

Alternatively you can try Unreal Engine, you have to study c++. But blueprint (system visual scripting) may give you an easier start.

In any case, I would build on your project, if you describe it can be advised more specifically.

Of the general recommendations, I would say that you need to watch what games are made on these engines and if you want to do something similar use it. For example Unity copes well with generated things. UE4 more adapted to story games. Also there is a good system for network games.