As it has the com_k2 url pattern, the existing URLs look like :
website/index.php?option=com_k2&view=itemlist&task=user&id={a number}

After processing the joomsef, the url is :
website/index.php/component/k2/itemlist/user/{a number}

And I would like to change them to look like this :
{a number}.website/
or
{a number}.website/index.php/component/k2/

I tried to add a RewriteRule in .htaccess file
RewriteRule ^(.*)index.php/users/([a-zA-Z0-9_-]+)$ /website/index.php?option=com_k2&view=itemlist&task=user&id=$2 [L,QSA,R]

For example:
website/index.php/users/{a number}
to
website/index.php?option=com_k2&view=itemlist&task=user&id={a number}

but it just redirect to this page without replace

Could you please tell me how to do?
Thanks!!

Hello,

In Joomla! it is best to use menu items instead of altering the htaccess file.
These URLs can be created by using menu items.