First of all, understand the guidelines of google, the instruction given on content writing.
If you have more categories in the multi-niche website, that is why it is necessary to have 6 to 7 unique posts in each category.
Try to write each article of at least 1200 words.
And contact us, about us, disclaimer, privacy and policy and term and condition should be on your page.
And keep this thing in mind: Mark empty category, post, page as no-index in Google.
When to get adsense approval for your website? After following all these rules, let it be well indexed in Google search result first.
Once indexed properly, send a request for adsense approval.
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