How can I glue two fragments from a URL?

Question

htaccess

The problem is the following:
Recently I went to the webmaster and saw that I have normal-looking links (site.ru/ page .html) and these are (site.ru/index.php?catid=2&id=35: page &Itemid=212&option=com_content&view =article).
These pages are duplicates and the page "page" for some reason looks like this.
I ask for help in setting up .htaccess, where it is necessary that all pages that have index.php? catid, etc. stuck together and got a normal CNC link.
There is only one BUT URL that has subdirectories, that is, site.ru/katalog/page.html does not need to be touched.
I hope I have clearly explained. Thanks in advance!