How to redirect only the main page through htaccess?

Question

htaccess

How to redirect only the main page to another page of the same site?
Regular 301 redirect does not work correctly.
Example: the site will be site.ru
the main page looks like this "site.ru"
in addition to the main one, there are other pages, such as site.ru/page1, site.ru/page2 I set up a
301 redirect from the main page to a new secondary page (site. ru --> site.ru/NEWpage)
But, after turning on the redirect from the main page, when you go to the site.ru/page1 page, there will also be a redirect, and the final form of the link will be site.ru/NEWpagePage1
Task: only the main page needs to be redirected, how to implement through htaccess?
ps I know that you can make a redirect through html code, but the page is presented in good positions in the search, and I don’t know how search engines will react to such a redirect, but I know that search engines perceive 301 redirects through htaccess well, and in this case the page is fast will change

Answer 1

RedirectMatch 301 ^/$ /NEWpage