Try to colab with a smaller (Or larger) YouTuber. Be sure your adding all the tags you can without putting ones that have nothing to do with your video. Other then that, play games that aren't uploaded a lot but people still play them, Playing games that just come out is a good way also since people will search for tutorials and lets plays on them. Other then that, stay dedicated, your uploading more then once a day which shows your dedicated to YouTube. Have fun, its hard to get noticed since tons of people are doing YouTube already.