I've been admining our family minecraft servers for about 5 years, and just handed off that job to my 12 year old daughter who now knows more than enough of the linux command-line to do it. I thoroughly recommend it, it's been great!

There are many ways to get it done. What worked best for us was choosing java over bedrock, renting a cheap linux vps, and writing some very simple shell scripts for starting, stopping, changing worlds, etc. Happy to talk you through anything you get stuck on!