A few channels blow up asap, but to most it's a long journey that may take years and hundreds if not thousands of videos.
If you have a large following in social media or are a active and respected member of one or multiple communities related to your game you can get trafik from does sources to grow quicker but make sure to don't spam self promotions. But for most new channels, when it comes to getting views it's a lot is about SEO (search engine optimization). You need to look at YouTube as a search engine and to get views you need your videos to show up in one of the top spots in the search results. In most cases is better to be number 1 for a keyword that only 10 people each day search for than number 200 for a keyword that 1 million people search for each day.
For most tiny channels is more or less impossible to compete for popular and competitive topics and search terms, YouTube will show the results from the much larger channels ahead of yours in most cases. I did this mistake myself in the beginning when I started out creating videos for a huge and very popular game. My videos just disappeared behind videos from the hundreds if not thousands of larger channels. What I needed to do to be able to be competitive was to niche down, go for sub niches.
Example for gaming:
1. Main niche gaming.
2. A sub niche of gaming - Strategy games.
3. A sub niche of Strategy games - Grand Strategy games.
4. A popular sub niche of Grand Strategy games - CK3.
5. A less popular sub niche of Grand Strategy games - Imperator: Rome.
6. A popular sub niche of Imperator: Rome - Let's plays.
7. A less popular sub niche of Imperator: Rome - tutorials.
The larger your channel is the higher up in the sub niche three you can compete. As a smaller gaming channel you probably need to go pretty deep into the sub niches to find a less crowded spot where your channel can actually compete for the key words.
A new channel could perhaps compete for a less popular game (5) and a less popular niche for that game (7). So you might start doing tutorials for Imperator: Rome. As the channel grows it can start find an audience for the let's plays (6) so you start doing let's plays for Imperator: Rome. As the channel grows even more it could start compete for more popular and competitive games inside the same overall niche (grand strategy games 3) so you start doing videos for CK3 (4) but as with Imperator:Rome you probably start with a smaller less competitive sub niche for CK3.
And as your channel starts growing even further you might leave the grand strategy niche and branch out to it's parent niche and start doing videos for different strategy games (2).
This i basically a good way to think about it if you want to be able to rank and get traffic from the YouTube search function as a smaller YouTuber. Realizing this was what got me from barely getting any views to start getting videos that show up in the search results. I'm still a small channel but I'm growing at a decent pace and closing in on 2 million views.
