I think Youtube had changed something in their algorithm once again. I notice some popular YouTubers who can easily get 20 million views with an ease have a huge decrease of views. One of the channels I follow use to have videos with 2 million views but now she is lucky to get videos with 5 thousand views. I think even some of the most mainstream Youtube channels that use to get millions are now lucky to have 100 thousand. Trying to get relevant in Youtube is harder these days. I mean even the established channels are struggling. I heard one of the reasons is that many people who subscribes to certain channels don't get notifications from there anymore.