To make the default RTL version just follow the below steps.
To enable RTL, Add the attribute dir="rtl" to the <html> tag.
<html lang="en" dir="rtl">
Update the CSS links in Shared/Partials/_HeadCSS.cshtml by including the link css files to include the RTL stylesheet:.
<link href="~/css/app-rtl.min.css" rel="stylesheet" type="text/css">