Bro im gonna be honest. subbed you straight away xD the MW2 video sold it for me, great ideas for videos and fun to watch actually. Professional looking logo and banner, and although the thumbnails look quite clean and professional, maybe try making them more eye-catching as if i saw them in recommended i wouldnt really think of clicking on them. Might I also suggest adding your social medias onto your banner as well as YT links, just people are more likely to go for it then i think.
Good luck, and keep doing what you're doing