Sure, and that's only recommended if you know your way around Kubernetes. I just wanted to illustrate that it's possible to host a k8s cluster with some workloads for 2.5€ per month.

You can always skip the Kubernetes overhead and use plain VMs.

Obviously you can't expect too much from a single vCPU at that price, but as an example, I had the above setup plus miniflux (feed reader), Postgres, Maddy (mail server) and Nginx for a few static sites, all on the cheapest instance. It was mostly fine, apart from occasioal stutters.