So starting from the general look and feel of your channel:
I think that your banner and profile picture are very well done they're simple but work well together and are good in terms of your branding and identity. My first piece of criticism would be about your thumbnails. They seem to be almost all over the place in terms of styling. Fer example you've got your 'Life is Strange' series and the thumbnail design for all of them is completely different, even to the point where you're using different styling of the game's logo for each video. I think there are a few problems with this:
1. It means that series don't really feel like series instead they seem like individual separate videos which isn't really what you're looking for, you want the videos to feel like a collection that go together and having a base thumbnail design can go a long way to providing this feel. Also you'd ideally want somebody who is new to your series and channel to be able to find the next video in the series
2. It makes it harder for new people to your channel to distinguish between what's what. This is bad especially when you do so many different things on your channel
I would suggest just working on a template thumbnail for each type of video that you make, that you're happy with. So that as soon as you have a video done you can just customize the template to get a thumbnail that fits in with the rest of a certain genre of video that you make.
So now into the actual videos.
The first thing I would work on is your framing and how you actually position yourself in front of your camera to minimize the amount of waste space in frame. In your latest video you are sat very far away from the camera meaning that you're very small on screen and a lot of space is being wasted on top and to the sides of you this space isn't really fulfilling any purpose. So for you I would ideally move the camera closer to you which would have the added effect of the audio being slightly better as you are closer to the mic too. If that isn't possible then zoom in your camera so you are better positioned. You just need to consciously ask yourself when setting up 'How can I make the best use of the space I have on screen?' and if need be take as many practice shots before you hit record for real
I like some of the graphical editing that you have done for example the intro you did for your 'Life is Strange: Before the Storm' series, maybe you could consider incorporating more of that into your videos? I'm not sure how you'd want to go about it but it could lead to a better polished video. I think it's come a long way since your vlogs (I would personally stick to one font for a title in one or two colours). On the topic of your vlogs you sometimes cut too late which leads to an awkward pause where you're presumably turning off the camera so I would cut a bit sooner and make the videos a bit tighter. It will make them run smoother.
Your music videos aren't bad. Apart from the same positioning issue, which is actually a bit better in your music videos, one problem is that your microphone is struggling to capture the lower notes that you sing. Forgive me if I'm wrong but it seems to me that you're using the on-board microphone? If you are and you plan to continue making music videos I would look at getting a better microphone. Obviously as you progress you'll want to upgrade most of your equipment as you go along but if you're not able to get a new mic this at the moment you can take a smart phone, place it a little off camera and angle it so that it's microphone is facing the direction of your mouth. Then using the voice memos app record the audio separately. It will give you decent audio for your videos and live music.
The last thing I will say is that you've got a lot of different genres mixed into one channel. Personally I would look at either 'specialising' into one genre of video, so in your case it would probably be gaming as your past few have all been gaming. Or if you still want to make all sorts potentially consider splitting your one channel up into multiple channels. The reasoning for this is that a lot of people will come to your channel for one thing so you will find yourself getting a lot of views and engagement on certain videos and not a lot on others. And even worse your audience might get annoyed with you for making videos they're not interested in. Maybe you can do gaming on one channel and your 'real-life' stuff on another? But that's just some food for thought and really it's your decision what to do.
I know I've said a lot. But I hope it is all useful and you find it helpful
I do Gaming videos, music videos, Spanish videos, Cover songs, Vlogs, and spectacular events! But i just need some reviews and opinions on what i could change on my channel, what i could do and all that stuff i would love some feedback here thanks 
