A few suggestions for you. The first is to give us an informative about page. When I visit a smaller YouTuber channels I always look at the about page to see what their channel is going to be about, what games they plan on playing etc. You haven’t provided any information like this so consider working on your about page. Thumbnails I think need to be improved because they don’t really stand out to me. Channel trailer is good, think you’ve done well to display your editing skills and commentary style. Try think of ways to gain exposure. Would suggest joining discord communities tailored to the games you’re playing because many of them will have self promotion channels. You can post your vids in these channels whenever you upload and people tend to be supportive and offer feedback. Wish you all the best :)