How do I create a Backend for an E-Commerce Website [closed]

Hello im going to be very straightforward here so here’s my question, I’m a beginner when it comes to developing a website and currently im preparing for my capstone project and I just want to ask if there’s any website or youtube tutorial about developing the backend of a project because I really have no idea and sense about it. The only thing I know is the front end and back end is a really different dimension from what I’m trying to do right now so to summarize I know nothing of backend and I really appreciate it if you have any tips and videos that might help me start creating a server connecting it from a database for an e-commerce desing website.
Thank you in Advance ^^

I already finished studying front end developing and yep backend is a really different one and I just want a tutorial for it.