html css and js work or one page

THIS IS ONLY FRONTEND WORK. THERE IS NO BACKEND WORK
===========

I need a html, css and js, bootstrap, based page for to display subjects like Mathematics and programming languages (JavaScript, Python, PHP), with each subject showing chapters and each chapter listing topics, and all this content should load dynamically from a JSON file so I can update it later without changing the code. The website should also include a Contact Us page with a form (name, phone, email, message) that sends enquiries to my email, along with a simple, professional design, fast loading, and easy future maintenance.

This data must be loaded dynamically from a JSON file, so I can update chapters and topics later without changing code.

{
"Mathematics": {
"Algebra": ["Linear Equations", "Quadratic Equations", "Polynomials"],
"Geometry": ["Triangles", "Circles", "Mensuration"]
},
"Programming": {
"JavaScript": ["Variables", "Functions", "DOM Manipulation"],
"Python": ["Data Types", "Loops", "OOP Basics"],
"PHP": ["Syntax", "Forms Handling", "Database Connection"]
}
}