Open Instagram
Tap the plus icon
Select Reel, Story, or Post
Choose a GIF file if your device supports it
If GIF is not supported, convert it to MP4 first
Upload the converted video
Edit as needed
Add caption and tags
Tap Share
For Stories, use the sticker tool
Tap the GIF sticker
Search and add a GIF from GIPHY
Post the Story
For direct GIF sharing, use a third-party app or convert the GIF to a video format first