Even few days ago, I used to think that I’ve to learn C++ and compile thousand of lines to make the condition of the game unless latter I found that there’s alternative that is visual scripting also called Blueprints in unreal 4, it’s like in past u had to deal with machine language that high level languages made it easy . Though visual scripting is not so easy to learn but not so much hard either and need the vast knowledge and cumbersome of a high level programming language like c++.
As others will en-light you but let me tell you, if you going alone and try to make a whole by urself, NOT learning something specific and join a game making company, there are alot assets already there you don’t need to ‘do it all’ yourself, get makehuman generate human meshes (kids even can do that) get animation pack (free from epic) cast those to the humans (not so hard, mostly automated) now you need to add logic, you have to get your feet wet, tutorial are all over, go slow try to make a easy game. Then as you keep going you get your feet wet on mesh design and animation.