Ok I watched the video, here is what I think you could improve:
-Talk louder, you sound like you are in trying instead of being confident y'know ?
-You edit too much, if you want your viewers to enjoy the map you have to enjoy It too. No need for editing every moment.
-Talk about you, or for anything ,other than focusing your words on the map all the time, to make It easier for us to engage with your content, you have to sound like you are playing and we are friends at your house watching you playing.
-Make the introduction no more than 10 seconds, but becareful on the introduction. The first 10 seconds are the most imporotant part of your video.
-In your thumbnails, you could use a little more vibrant colors, because your current format makes your videos to drown at the sea of content, make them stand outl
-Lastly, I would suggest you to study your competition, specifically the successful youtubers that are doing what you do or trying to do.
Best wishes!