Magento index.php问题

Question

I have an issue with Magento index.php URL

Sometimes it runs from Index.php and sometimes it runs from index.php

Like this

https://www.example.com/Index.php/demo

https://www.example.com/index.php/demo

While this situation occurs it's leading me to 404.

I tried some code from .htaccess to force redirect to index.php but it is not working properly.

So, I need it run only from index.php I don't want to use Index.php

I also tried several examples which are available in SO but,

I have shared hosting so I can't make any changes server/vhost config files

Any help will be appreciated.