plug in a cable from the camera (micro usb) to your pc (usb). Press PLAY on the camera to play the video, check that the pc connects to the camera and then you can d/l the video or photos.
Found in YT, I searched for "canon vixia hf r 700 transfer video"
My 2 cents
If you don't find the right cable, go to the offices of the "animal control office" with the mem card - they may have a computer that can read it.
Just saying
W