Problem redirect

Hi, I have a very important problem.
If I install a plugin that removes the my-category slug (I tried two plugins) I correctly visualize my site without my-category slug, perfect.
But if I type mysite.com/news/amp/ I get a redirect in a post with the url that starts with mysite.com/news-title …
This also happens with other categories. Therefore it is impossible at the moment to use an AMP version for the categories.
Depends on what?
How do I see where the redirect comes from?
I uninstalled the “Redirection” plugin and removed all the redirects, also in Yoast. I don’t have redirects in the .htaccess file.
Thanks to those who will help me!