404 error on links ending in /feed

hello

Google Search Console shows thousands of URLs that end with /feed. Google Search Console indicates that it is a 404 error. But when you click on the links, you are directed to an information page, not a 404 page.

Among the thousands of links are the following links:
https://www.kannour.com/product/خاتم-رجالي-كلاسيكي-حديث/feed/
https://www.kannour.com/product/احجار-العقيق-المزهر-اليماني/feed/
https://www.kannour.com/en/product/ring-men-silver-925/feed/
https://www.kannour.com/en/product-tag/yemeni-agate-photographer-en/feed/

When you delete the word feed/ from any link, it directs you to the correct content. We don’t know where the word feed came from.

We did not understand the reason for this error. But it greatly affected our site’s ranking in search engines. We lost the first positions in search engines because of it.

Please help.
Thank you in advance