Custom Contact Form Integration

I need a fully-functional contact form added to my existing website. The form must collect four fields—Name, Email, Phone Number, and a Message/Inquiry textarea—and send the submission to my chosen address while storing a backup in the site’s database... (Budget: ₹600 - ₹1500 INR, Jobs: Backend Development, CSS, Database Management, Frontend Development, HTML, JavaScript, PHP, Web Development)