YouTube has a very sophisticated algorithm that evaluates how a video performs compared to other videos on the channel and decides whether a video is suggested to other users. This way, you can gain a lot of reach even with a small channel, as long as the quality of a video is right and it is well received by the users.
The algorithm is not only sophisticated, but can also be manipulated. By using certain tricks, it is possible to boost the algorithm to an extreme. The strongest of these tricks is the generation of external traffic. If users are brought to YouTube from another platform, which does not belong to Google, YouTube thanks you by improving the visibility. Especially if a user watches more videos on YouTube after your video, i.e. spends a longer time on YouTube through you, you get a big plus for the algorithm.
