It might be difficult to find a driver specified for 9V, some 6V or 12V drivers may work depending on their output voltage range, if not they can be modified by swapping a resistor, I talked about it here regarding the Noctigon boost driver : Reddit - Dive into anything
Now Hank does this modification for lower Vf red LEDs, so you could order one (by email, they’re not listed on the website) and ask specifically for a red led boost driver (2A).
On the Convoy FC40 driver the resistor to modify is the top one in the second picture : What did you mod today? - #10939 by Haukkeli
330K should do, but it’s possible it works without modification because its outputvoltage range is already mostly below 12V with the stock resistor.