I can honestly say that you are the best kid let's player I have seen so far. I love your humor and humility especially in your trailer. I love when you just walked away with you laptop in one video "This wasn't planned". You have good energy and a good personality, and you seem genuine.
But you didn't write to hear just praises did you? =P First of all I would like you to think about the following. Who are you? Who are you as an entertainer, what is your personality? I'm asking because the way you open your videos, saying "WHATS UP" doesn't correspond with the person is see later in the video. At least not to me. It's doesn't seem like you, it seems like you are copying someone. When you can answer what your personality is then what music would fit that personality? I feel that the music choice may not be fitting. I'm convinced you like that music, but does it enhance and compliment who you are as an entertainer? And yeah I agree with a former speaker that music is way too loud in some videos.
Second of all, you need to be aware about how other people view you and think about how to use that to your advantage. Let's face it, you are obviously young and that unfortunately has implications. I made a video about this on freedom central:
Have you thought about why people would want to watch you over the huge amount of other youtubers in your genre. That is something that you need to be able to answer for yourself.
But yeah I hear you. I've been going at it for two years and I have half of the subs that I thought I would get in one year. Sometimes you can do everything right and not go nowhere, and then someone else randomly uploads a video of a cat and get millions of views. I'm having that exact same problem. I really believe in my content though, I think I deliver. But I haven't cracked the marketing code yet.