I often write scripts, that I don't run from the terminal but by clicking on the file in a file manager. Normally they would then run in the background without showing anything, but it's actually quite simple to let them spawn themselves in a terminal temulator window. I use the following technique for more than 20 years now and it has proven to be one of the most useful things to keep in the back of you mind.

#!/bin/bash

if ! tty -s; then
    gnome-terminal --title="Some title" --window -- "${0}" "${@}"
    exit
fi

echo "Press a key to close the window."
read xxx

The tty command returns with an exit code higher than 0 if the input isn't connected to terminal, hence it can be used to check whether a script is running in the background or not. Of course you could check for installed terminal emulators as well to make it compatible across multiple platforms/desktop environments and/or checking environment variables like XDG_CURRENT_DESKTOP to spawn the script in a fitting terminal emulator, but I usually don't do that for my scripts.