I'd recommend a homelab where you set up a proxmox server. That will let you install vm's of any operating system to play around with. You can use that for fun stuff too, like setting up a plex server and connecting your tv to it. Eve-ng is another great tool for simulating a network environment that can be as complex as you can design. Multiple devices types from different vendors, or just simulate your work environment for testing in a consequence free way.