Here’s a collection of some awesome Free Digital Art Brushes. Some of these brushes for Procreate and Photoshop are preview brushes of a bigger brush pack. Other brushes are stand alone or part of a digital art tutorial on my YouTube channel.
If you are having trouble importing your brushes or brushsets into Procreate, then I can help you out. Just check out this article about how to install brushes into Procreate.