what should i do?

I read in a blog post that it's extremely important to promote your channel in the first period before it picks up to the first 5 000 subs. The author argues that when you start uploading and the views and subs are slow, and there is obviously some substantial time passed from the first uploads...

So I've done my keyword research and everything, used the best tags possible and my videos do not even rank. I find Minecraft videos searching for Bloodborne before I see my videos. Checked all the pages for results and nothing. If you can give me some advice for this that would be great. Thanks.