Solution: Free domain host, and run your server locally. (laptop, raspberry, or most easy one: a little mini desktop/windows htpc)
Mini pc's are the best choice due to their low energy costs.
Maybe a one time investment of 100-200 euro.
Needs some more upgrades in the future, but you get the idea, cheaper then online game hosts.
Old company used "thin-clients" can even run a UT server or 3 on it.
You can buy them el-cheapo for 30-50 euro.
With a remote desktop application like VNC/Radmin (not teamviewer, more ram usage)
You can control this server from anywhere, where you place it
You also have more (read total) control over your server installation instead of hosts like GameServers and NFO.
New forums these days won't work anymore.
There are too many group platforms which are logically taking over. (discord/telegram you name it)
Established forums will die not too far from now as well, sad but true.
UT ON Man Piley!
Almost 20th anniversary, and you're bailing
Our servers are always empty as well!
Who's isn't ?
Joking, i feel you.
But there are solutions for your situation, if you want to sustain the servers you know.