Straight away: put the video game title in your title or in the top of your subscription box. It took me like 30 seconds to realize this was a gaming tutorial, which is way too much time. A better title would be: "Double-Mission Trip Tutorial -Astroneer Lunar Update". Having the game title is important, especially with lesser known games. Put it at the end though, because YT cuts titles short. Tutorial is a big buzz word that people search for a lot.
Your audio could use some smoothing, as some T's and S'ses sound very harsh. You don't have to straight up change the presenter, just give a bit more care to the audio produced.
Also, make better use of your description box. The first couple of lines are the most important, as A) most people will not expand the description box and B) the algorithm only scans the first bit of the description for keywords. Put an adequate description of the contents of your video (with lots of keywords such as 'tutorial') in the start of the box.
Tags. You have way too less of them and they are not specific enough. This is an Astroneer game tutorial, so put tags like 'Astroneer tutorial' in your tags. Overall I think you need to learn a bit more about SEO (Search Engine Optimization).
I watched about 2 minutes and you can use a few more jump cuts in your editing. When you travel to a planet to show something, just cut to it. People don't have long attention spans, especially if they are watching a tutorial for something specific.
In general, I don't think you have bad content, people just can't find it due to a lack of SEO. I do think there is a niche audience out there for you! Hope this was helpful!