How to for getting file into camera raw 14 for canon r5

See: 

https://helpx.adobe.com/camera-raw/kb/camera-raw-plug-supported-cameras.html

https://helpx.adobe.com/camera-raw/kb/why-is-my-camera-not-supported.html

IF your camera is so new, it isn't listed here, nothing you can do for the time being. 

Every time Canon (or Nikon, or Sony etc) release a new cameras, they do this stupid trick of making yet a new proprietary raw file that everyone outside the company, including Adobe need access to so they can 'hack' the tiny differences to support that new proprietary raw. You the customer get to wait and are forced to use the manufacturers raw converter until this all takes place. It is silly but that's how it has been for decades. Some companines are faster to do this than others, but the facts are, every 3rd party raw converter manufacturer has to go through this silly dance. Complain about this to your camera company.