The server is in a different country

You really need to have lead with that. I do what you want all the time, but it’s to another port of the same switch.

Your problem is basically latency. X11 used to run fine on local 10Mb/s networks and that’s no streth these days for WAN connections. What you won’t be able to get past though is latency. How chatty is the protocol.

Anyway, I suggest you try xpra - that was on my list to try at one point but I haven’t needed to. But it is meant to be for what you want and optimised for that. I wanted it so I could disconnect from the machine and reconnect later to resume, but I found it simpler to just do most things in the terminal and use tmux instead. I’ve been happy with that for years now.

I just pronounce it postgres. That’s the original name of the database. It originally had its own query language (quel), and SQL was later retrofitted onto it and called PostgreSQL. But the original quel language is long gone that we may as well go back to calling it just Postgres.