Zigbee 3.0 dongle + Sonoff RM433R2

Hi,

Can anyone comment whether zigbee 3.0 dongle (HA RPi) + RM433R2 remote control “work together”

As I understand, the RM433R2 uses pure 433 mhz, but the ZIgbee (sonoff) dongle is using zigbee protocol ( i do not know which wavelength). Therefore, do I understand correctly, that I will not be able to get them working together without an RF bridge of sorts?

My usecase would be simple - map the 8 buttons to various lights in the apartment.

Thank you in advance for any insights!