Welcome to steemit! I was the same starting on steemit, didn't really know what to post about, kind of found my niche writing my life story here now.
Just find whatever you enjoy posting about, personally for me I like you gaming ideas because I'm a gamer :)
Ill follow you anyway and see what you decide on.
That is great you found your niche! I hope to find mine sometime soon. I will definitely follow you to sync up with a fellow steemer. :) also, thanks for the suggestion. I can try out a gaming video as well.