Look for urls that end with a “.gif” those are generally links to files which damus and other clients can render, links from https://tenor.com or https://nostr.build will work. Other links are rendered as links so you see the ugly url!

Copy the link of the gif. Not the gif itself. And paste that. ?cid=2154d3d7zyfjacbvuyenqdj8fwwgoms4hyofjlzf1yykshtt&rid=giphy.gif&ct=g