I took many good pictures without a motorized mount if the length of the video isn't too long or if it was just a picture. If you can't keep your hands steady, I recommend buying a phone adapter like this one
Popular alternatives to
Celestron 93692 Smartphone ...
GOSKY Smartphone Adapter Mount Regular Size - Compatible with Binoculars, Monoculars, Spotting Scopes, Telescope, Microscopes - Fits almost all Smartphones on the Market - Record Nature and The World