Thank you guys for your feedback.
I now agree that having 2 sites with same contents is a bad idea.
The problem I have is not with Google indexing, as all my pages are indexed, but rather poor rankings.
Three years ago, I was ranking on average #3 for some keywords related to my products on Google, now, those same keywords will rank between 40 and 50.
I think Amazon is partially to blame as they are very powerful $$$.
However, many of those keywords will rank #1 on Yahoo, DuckDuckGo, Bing...
My site is available in English and French, setup like mysite.ca that default to mysite.ca/en/ and mysite.ca/fr/.
In Google Search Console, my main Domain Property is mysite.ca, but there are also https://www.mysite.ca/ and https://www.mysite.ca/en/ in the list.
I can see that there are sitemaps listed for the first and second property.
Is it possible that this is a problem with Google because the same sitemaps (3) are being processed for the same site?
I can't find a way to delete the duplicates sitemaps on Google Search Console, should I just delete the https://www.mysite.ca/ and https://www.mysite.ca/en/ domain property and keep the main domain property mysite.ca ?
Any advice would be appreciated.
Here is my store if anyone want to look at it...
https://www.miraxsupplements.ca
Cheers,