I want you to spend some time, and go on YouTube and search up popular gamers and unknown gamers, and see what they do. You should also take some physical notes...
After you do that. THROW EM in the GARBAGE!
Channel ideas come from your mind and you alone. Trying to do what someone else does isn't recommended. When you make your video, you need to enjoy what you do. If you're making gaming videos of games you don't care about it doesn't matter who your audience is. You will stop producing or stop caring because you will get bored very quickly. YouTube needs people that love what they do.