Reduced color gamut on outdoor video with Canon EOS RP

I am trying a new DSLR camera for shooting video. I set white balance to automatic and the result seems to have a poor color gamut compared to either a Nikon DSLR shot outside or to the Canon shot inside. Here is the result of the Canon after transferring to my computer:

Result of Canon outdoor video

and the Canon with the same puppet indoors:

Result of Canon indoor photo or video

And a Nikon D5200 with the same setting and puppet:

Result of Nikon outdoor video

How can I fix the color gamut of the Canon EOS RP for outdoor video?