As an YouTube channel owner and content creator, you need to be consistent when posting new videos in your channel. This helps your subscribers to be aware of the pattern/schedule and they will follow the new content easily. If you post your videos completely out of schedule and that do not follow a posting pattern, less chances your subscribers may watch it. You can also tell your subscribers how often they can expect your channel’s new videos.
There are two options to be consistent when posting new videos in your YouTube channel.
First one is to follow your own schedule and post your videos consistently on the schedule, like daily, weekly (on a particular day), monthly (on a particular date)
The second option is posting the videos on a given timeframe. Even though you do not follow the days schedule you follow the pattern of posting your videos on the same timeframe of the day. Example 4-6PM window, 6-8PM window etc.. Irrespective of the schedule you post your videos in the same timeframe which is consistent and helps your subscribers as well.
Both the methods also help YouTube algorithm in understanding your channel better and suggest your videos for newer viewers.