.htaccess to redirect from http to https

I have a website on shared host, the hosting default root directory is /public_html, but I place my website at /pulbic_html/web for file organizing purpose

I have registered for HTTPS from cloudflare

I wish for 2 results

1. visitors can type https://example.com, https://www.example.com
2. visitors can type http://example.com, http://www.example.com then redirect to either https://example.com or https://www.example.com

My current .htaccess

RewriteEngine On RewriteBase / RewriteCond %{HTTP_HOST} ^www\.(.*)$ [NC] RewriteRule ^(.*)$ http://%1/$1 [R=301,L] RewriteCond %{REQUEST_FILENAME} !-l RewriteCond %{REQUEST_FILENAME} !-f RewriteCond %{REQUEST_FILENAME} !-d RewriteRule ^ index.php [L,QSA] 

Using the current .htaccess

1. typing http://example.com -> working
2. typing http://www.example.com -> working
3. typing https://example.com -> working
4. typing https://www.example.com -> working but redirect to http://example.com with connection not secure warning on the browser

I have googled and came up with

RewriteEngine On RewriteCond %{HTTPS} off RewriteRule (.*) https://%{SERVER_NAME}/$1 [R,L] RewriteBase / RewriteCond %{HTTP_HOST} ^www\.(.*)$ [NC] RewriteRule ^(.*)$ http://%1/$1 [R=301,L] RewriteCond %{REQUEST_FILENAME} !-l RewriteCond %{REQUEST_FILENAME} !-f RewriteCond %{REQUEST_FILENAME} !-d RewriteRule ^ index.php [L,QSA] 

with this .htaccess all testing result

please help to achieve these

1. typing https://example.com, https://www.example.com -> working
2. typing http://example.com, http://www.example.com -> redirect to either https://example.com or https://www.example.com

thanks all