Reels are the most popular way to generate great results right now, so that is the best way to go. Photos are OK when you have built up a following, but generally not great for building one as Instagram does not push those to new people. A reel is a short video, either comprising still pictures or video content. Here you can showcase jobs you have done that you’re particularly proud of – or things that are popular with customers, such as Garden Rooms.

Additional reading: https://blog.hootsuite.com/instagram-reels/