How do I setup my own FOSS shopping website for my business?

Hello, I don't have much experience in self-hosting, I'm buying a ProtonVPN subscription and would like to port forward. I have like no experience in self-hosting but a good amount in Linux. I'm planning on using Proxmox VE with a YunoHost VM. I already have a domain name from Njalla. I'm setting up a website for my computer...