Go grab a free goodie from Ian Hubert.
Ian Hubert shared a free camera shake add-on that will let you add an extra touch of realism to your animations in Blender. To develop the plugin, the artist filmed some motions, motion-tracked them in Blender, looped them, and asked his friend Nathan Vegdahl to turn the final set into an add-on. The tool will allow you to apply real-life camera motion to any camera in Blender letting you blur the line between CG art and real-life footage.
This add-on requires Blender 2.91 or later. Please note that the tool is licensed under the GNU General Public License, version 2. Learn more and get the tool on GitHub. Also, check out the artist's Twitter page for more.