I think finding a niche doesn't have to be restrictive and can be very satisfying. I mostly have video reviews or game footage, so not very original, but the original content I do produce is VERY niche - football kit design for Animal Crossing. The compilation videos will never get big numbers, but I enjoy making the designs and sharing with other people. I've even had people request tribute shirts with the names of lost family/friends to use in-game. Those are quite heart-warming when I hear the stories behind the shirt.