I just took one quick look at your channel and NON of your videos are telling me really what there about, you have no channel banner either so i can't tell if your just an account uploading videos of games for your friends to watch or if you want to be a mobile gaming channel.
Take a look at some of the channels you watch, how does there channel page look.
Its also super important to have titles that are "clickbait" but honest what i mean by that is the title is honest in what its about but its interesting enough that the person wants to click it and find out more. Same with thumbnails.