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I didnt got a correct reply.. currenly, i have mapped one of the keyword 'cash for cars sydney' from inner page to homepage. can i get help, does that helps ranking, if move to homepage and can anybody check and let me know, the onpage done correctly.

I have lost search SEO ranking for 4-6 core keywords while removing www from domain switch.
Referring domain: https://cashforscrapcarsydney.com.au/

Earlier the domain was in the format: https://www.cashforscrapcarsydney.com.au/

But when I checked the search result, search engines had not yet crawled to the new format. Let me know if the server change or any algorithm hit might cause it.

Also please share the feedback on - does removing www from the domain losses keyword ranking.

Helpful replies are needed.