What is the best channel to promote your page?

Hi, authors!

Recently I create a youtube account to promote my products, but this isn’t working as I was expecting. Most of the clients find my products simply by searchings or when a new app is published (probably because of it on the home page in sections ‘New’).

I know that different channels work better for different products, but can you please share the channel you use to find new users and which one works best for you? And how big difference between them.