Controller without Keyboard

I don’t use a keyboard and want to add more expression to already written hand-edited MIDI notes. Need some sort of controller, not involving a keyboard. As the notes are already written, I do not need piano keys.
Have seen devices such as EX2M and FS2M - expression pedal and footswitch to USB MIDI - from https://beatbars.com.
Is there not some single USB device which works with Cubase and which has precise faders, allowing me to adjust volume, expression, modulation and vibrato for example? Is there such a beast?
Regards.

Yeah there’s loads:

https://nektartech.com/panorama-p1/
https://www.expressivee.com/touche

Korg nano controllers are inexpensive and have 8 sliders and a few knobs here and there. They can be mapped to control VST etc. Handy and won’t break the bank.

https://www.korg.com/us/products/computergear/nanokontrol2/