I’m no expert either. But I took a look at your most recent. All I can offer is random thoughts, tho.
You have one of the most important basics right - clear audio for your voice. Everyone agrees that muddy audio is off putting, but you’re coming through clearly.
You seem to be aiming at the 10-20 minute timespan. That’s very approachable and popular, and my personal favourite for YT, but it doesn’t sit comfortably with your approach, which seems to fall into the “Let’s Play” genre.
“Let’s Play” follows a character through its story, and lends itself better to the solid-hour format. Soupasoka is (was) my favourite “Let’s Play” follow, but many YouTubers do it.
In the 10-20 minute weight bracket, we more typically see advice videos. Hazelnutty is a master in this genre. Her videos feel as light as whipped chocolate as you watch them, but have the approximate density of Plutonium. There are other excellent advice and news channels in the 10-20 minute space, each tending to specialise in a specific aspect of the game.
I found the aspect ratio of the video a little off for YouTube, with the black bars. Usually, people make it fit … however the software does that. Not a dealbreaker.
I did like the video. Your narration is a little halting, but practice will improve that. I wanted to yell advice and information at you.
I would have preferred one video of one complete dungeon. Or, looked at another way, you could have gotten two videos for the price of one out of it.
If you really want to do more, I’d suggest watching videos from established YouTubers on how to start a YouTube channel.
I’d also suggest watching a few videos from each of these established WoW YouTubers while you keep adding more of your own work:
Hazelnutty
Taliesin & Evitel
Studen Albatroz
SoulSoBreezy
WoWCrendor
Dalaran Gaming
Marcelian Online
Signs of Kelani
MrGM
hirumaredx
to see what successful channels typically do, and get ideas.
If you want to understand the Dark Arts of thumbnails, Mr Beast has spoken about it many times. Worth watching. Also the story of a Veritasium video that took off into the stratosphere after a suggestion from Mr Beast Clickbait is Unreasonably Effective And in the Warcraft space, Bellular has explained why he keeps using clickbait thumbnails and titles, and people keep watching more even though they complain about how blatant they are.
You don’t seem to have a presence on Twitch or Twitter. If you want to insinuate yourself into WoW conversations, and plug your content with short clips, Twitter is a great place to be.