If you want to redirect HTTP to HTTPS and want to add www with each URL, use the htaccess below:
RewriteEngine On
RewriteCond %{HTTPS} off
RewriteRule (.*) https://%{HTTP_HOST}%{REQUEST_URI} [R,L]
RewriteCond %{HTTP_HOST} !^www\.
RewriteRule ^(.*)$ https://www.%{HTTP_HOST}/$1 [R=301,L]
It will first redirect HTTP to HTTPS and then it will redirect to https://www
😉