Hey everyone!
Great news - the search bar is already available in the Event Calendar 
With the new search bar, you can quickly locate events by name or filter criteria, making it faster and more efficient to find exactly what you’re looking for.
You can enable it on the Filters tab of your widget’s settings:
Check this post for more details - Event Calendar: [MAJOR UPDATE] New filter design, tag filter, search bar and more! 🔥