Note that proxmox also supports containers (LXCs), they are just different from Docker containers.

LXCs are closer to VMs than Docker containers are, but they are still different. One big difference: Docker containers are stateless/immutable, while LXCs are not. I prefer the mutability ;)

Proxmox is often recommended because it makes administering things easy (never used k8s, but I heard it makes it rather hard because it’s built for scale) when you use LXCs (though you can still use docker, I have a VM for docker-only apps), incremental backups with deduplication thanks to PBS, still efficient backups otherwise, everything with a nice web interface, but with nice command line tools available.

Caddy. I started with Nginx on my VPS. Then I heard about this new tool caddy. Sounded fun, but whatever. Then I switched VPS (and also Debian to Arch), decided to try caddy and loved the simplicity of it. All the configs are clear and make sense, far more than with Nginx. Super easy SSL is a nice bonus.

Nowadays I have a home server, and user Caddy there as well.