How to configure php for sending form data to mail when php.ini is missing to configure

I created my website recently, which has a contact form and need to send that data to my mail. I used the POST method and called the php endpoint, but it just returns blank white screen when submit is hit. To configure PHP.ini, I used phpinfo() to get the file path but the php.ini is missing, nowhere to be found in the file manager on cpanel. Please help me fix this.