Where should I store data provided by the user for me to see it?

I'm building a website that is currently composed by HTML, CSS, JavaScript and PHP. My goal is to build a page for giving quotes on 3D printed parts based on the file the user uploads. The data I collect from the user is: name, email, some 3d printing settings and the 3d file.

My question may be pretty simple, but i'm lost on where should I store this data for me to see it and download their file for me to be able to give them their quotation (I need to have the file for that). My first guess was phpmyadmin, but i'm not sure if thats the best option for my purposes, correct me if i'm wrong. I also considered sending it via email to me, but I worried that the files the user provides may be too heavy.

I'm not asking for a full solution, but for someone to help me find the direction of my research. Mostly, what would you use in a case like this?

Thank you for your time.