Thunar File Manager: Open any Terminal via Open Terminal Here

Add the following line to the helpers.rc file in the ~/.config/xfce4/ directory, if the file doesn’t exist, create a new one.

TerminalEmulator=alacritty

Confirm via terminal by running this command:

exo-open --launch=TerminalEmulator

Or right click anywhere in your Thunar File Manager window. Then click Open Terminal Here, it should open the current directory in your terminal of choice, it’s alacritty for example given here.

References

Thunar: Open Terminal Here — ArchWiki