Instagram is a popular social media platform. You can easily share pictures and videos with your friends and followers. However, there are two methods to post gifs on Instagram: 

Method 1: Use GIFs from third-party apps

You can not create gifs on the Instagram app. It is mandatory to create gifs from other apps. Some apps are:

• 1. GIPHY: It is a great app for creating custom gifs. You can also use gifs which are available on this app.
• 2. ImgPlay: You can use ImgPlay to create gifs using photos and videos. 
• 3. Songclip: The reason for using Songslip is that they have an Apple feature available.

Method 2: Convert GIFs into Video

You can not use standard gifs but you can turn them into videos using adobe express.

For more:- https://onlinegeeks.net/how-to-post-gif-on-instagram/