hey, I have just seen your channel and I see the issues. There is not many!
1. Your mic is picking up some buzzing sounds in the background. You can fix this by buying a new mic, if not then simply using audacity to sort the buzzing out (this may take longer to edit the video)
2. You don't have a Channel Trailer, Introduce yourself to your audience! Tell them: Your name, Age (optional), Job (Optional) what your channel is about, what you plan to do in the future. You can also your game footage in the background or just simply use your webcam and speak to your audience.
Number 3 is optional. Get an intro, weather is a catchy one or just to introduce yourself before you speak. This is for your own branding.
I also suggest you removing the game logos from your channel banner as it kinda don't fit (on my screen) I say keep it professional by keeping the bits in the middle (your channel name, social media links, the catchy "Let's play Game Play" and the pictures that you have duplicated to surround it (I do think its anime but I'm not really into it so I would not know)
Everything else is amazing! Keep the good work up!
Connor ~~