That may not even be a power outage, a simple bug or anything that may hang or reset the smartphone and the scrcpy session can't be started again.
Unless you have a trustable person who has keys to your home and is available to power on and make sure a kvm setup is on you can't self host and just assume that what is running at home will be up all the time when you are abroad compared to a managed datacenter with redundancy, remote access and personel available.
