How to set up a 301 redirect correctly?

Question

htaccess

Hello!
There is a website domain 24medcentr.com.
You need to set up a 301 redirect via .htaccess, which would be like this:
24medcentr.com -> https://24medcentr.com
www.24medcentr.com > https://24medcentr.com
https://www.24medcentr.com > https: //24medcentr.com
I wrote the following code:

RewriteEngine On
RewriteCond %{SERVER_PORT} !^443$
RewriteRule .* https://%{SERVER_NAME}%{REQUEST_URI} [R=301,L]
RewriteCond %{HTTP_HOST} ^www.site.ru$ [NC]
RewriteRule ^(.*)$ http://site.ru/$1 [R=301,L]

But when checking the redirect, www.24medcentr.com redirects to two addresses at once:
https://www.24medcentr.com/
https://24medcentr.com/
Tell me how to set up the redirect correctly. Thanks in advance!