I would get a cheap MinisForum/Beelink mini-pc with an i5 and install Yunohost, or Casaos, or Cosmos or something like that, really easy to install, use and maintain.
To access the PC, just add a Wireguard server to your mini-pc server, set wireguard client on the PC, AND and you’re ready.
I got this one for around US$360 and added a SATA 4TB SSD to it, running all my services out of it and have yet to see it hit 50W.
MINISFORUM Mini PC NAB6 Lite Intel Core i5-12600H,12 Cores 16 Threads,up to 4.7GHz 32GB RAM DDR4 512GB PCIe4.0 SSD Dual 2.5 G RJ45 LAN Mini Desktop Computer,2 x HDMI,7 x USB Port,WiFi 6,BT5.2 a.co/d/a5BzT7t