Hi everyone. I’m trying to change my default terminal to alacritty from xfce-terminal and I tried searching and found a similar problem but the persons solution was to simply uninstall the undesired application, which hasn’t worked for me. I assume there is some type of config that handles this? Any help is much appreciated!
Welcome, @KeepItDory ! 
There are several options available that, according to the Arch Wiki work in openbox:
Hello and welcome,
Maybe a variable is set somewhere, what’s the result of :
echo $TERMINAL