Actually this is pretty usual, There are many things you can do about it :
1 - upload regular videos with latest stuff
2 - give something unique to your audience
To make a video popular, a simple theory can be used :
The video should be based on a simple ordinary thing, for example : like an onion.
Now you have to show magical effects of the ordinary thing, for example : medical uses to onion, how it can be used as a beauty product, how it can cure various diseases, different ways to cook it, etc, etc.
You will surely attract more audience than before...
One more thing, dont forget to share your video on every social platform, social groups, etc.