The image section and the composition play an important role in the selection of the profile picture. Make sure the main subject is well positioned and in focus. Experiment with different crops and choose the one that best suits the message of the image and your style. Also, keep in mind that most of the time the profile picture will be square, so it makes sense to choose a picture with an appropriate composition.
If you're also active on other social media platforms, it's a good idea to use a consistent profile picture. This makes your identity consistent and easily recognizable across different platforms. When users find you on different platforms, it's easier for them to identify and follow you.
It's important to update your profile picture regularly to look fresh. As you evolve yourself or your brand, a new profile picture can reflect that change. It shows that you are active and care about your profile. However, be careful not to change the profile picture too often to avoid confusing your followers.
Note, however, that Instagram insta zoom compresses the image to a smaller size when uploading it.