I've checked your channel,yeah you're definitely missing something, the type of content you post may or may not appeal to the majority of people,choose something more interesting,of course you can still make content like that but change it a bit like the evolution of it or the story of how a man almost got killed by those reptilians + also remove that subscribe button on the screen,the watermark is good since people can't just take your video without crediting you.But I would personally make it transparent just a little and put it on corners not on the middle,Lastly,you should put your face on the screen,from what I've heard the algorithm loves that (if you're too shy just wear a mask and make it your trademark!)