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@laurentjb You can check by using MOZ Keyword Keyword Explorer

1. Open keyword explorer & enter domain URL
2. I use https://jinxmangaonline.com/ as an example. Put it in Adrress box & select root domain
3. It will show the ranking keywords, along with DA & PA

I hope this helps.

@laurentjb Congratulations that you article is perfoming well. You can find out why you blog is performing well by Using different tools. I am going to explain the method of MOZ

1. Open Moz Keyword Explorer
2. Put any domain For example: https://jinxmangaonline.com/ in Keyword explorer & Select Root domain from the box on the left side.
3. It will show the ranking Keywords, along with Page Authority & Domain Authority.

From there you can check which keywords are ranking & gaining traffic from Google.

If you have any other question, let me know.

@laurentjb Yes you can redirect 1 page to another using any redirection plugin.
You can either 301(Moved Permanently) or 302(Moved Temporary) the Url 1 to Url 2