I guess even if you don't have any subs, if you know when to post your videos, and combining an appealing title plus thumbnail will really increase the viewers that come in. I've started studying art of perfecting a youtube channel and i can see now it's a big phisolophy and that if you really want to make it, you need to be more than "Just posting videos, when ya feel like it" Also as people said above, TubeBuddy will help you get a bit more viewers as it would suggest you trendings that people search for in that category.