File upload size limit in wordpress and php.ini limit

I checked and it seems that your host infinityfree.net block custom php settings.
infinityfree.com doesn’t exist.

https://forums.cpanel.net/threads/how-can-i-protect-php-ini-with-suphp.127537/#post-554049

https://bobcares.com/blog/disable-custom-user-ini-easyapache-4/