I have been using this gallery-card, which can be installed via HACS.
My setting in the dashboard:
type: custom:gallery-card
entities:
- path: media-source://media_source/local/ring-videos
recursive: false
show_reload: false
menu_alignment: hidden
maximum_files: '1'
(Note: looks like the author of gallery-card won’t be updating it anymore, and has been using frigate card)