Open Instagram and tap the plus icon
Choose Post, Story, Reel, or DM
Select the GIF from your device if it is saved as a video or supported file
If posting a Story, tap the sticker icon
Tap GIF to search and add a GIF from GIPHY
Adjust the GIF placement and size
Tap Share, Your Story, or Send
If the GIF is not supported directly, convert it to a video first
Upload the converted file to Instagram