To cite an image from Flickr, use the following template:
Author's name. Title of work. Date taken [if applicable]. URL. (accessed Date accessed).
From the image page on Flickr, select the author, title, and date taken (in green on the image below):
The following is the citation you would use for this image:
Mathisa Appel. Red Panda. November 27, 2016. https://flic.kr/p/PFrLyL. (accessed February 10, 2021).