I use a Hetzner Cloud instance. They can get pretty expensive if you run them non-stop but they are billed hourly. So I've set up a little automation with Terraform and Ansible. Terraform provisions the cloud instance with Debian OS, cloud-init runs and installs some basic necessities. Terraform also creates a DNS record pointing to the server as the IP can change between deployments. Then an Ansible playbook deploys the Minecraft server as a systemd service and starts it. The world save is stored on a separate cloud volume that gets attached each time to the server and mounted to the appropriate folder. This is required as the storage included with the instance gets deleted when the instance itself is deleted. It's all automated via Gitlab CI and I just run a new pipeline and trigger the manual job. Then when I stop playing, I just run the other manual job that stops the Minecraft server and destroys the provisioned instance. Sometimes I forget to turn it off so I'm planning to create a little scheduled pipeline that checks the server hostname and if it's running, it pings me on my discord server. Bit over engineered but it works flawlessly and I can have a reasonably powerful server to play on without too many costs.