Using an ACF form in this case would not be the best way to accomplish what you want to do. ACF forms save data and then redirect back to the submitting page, or another page based on the form settings. There really isn’t any way to prevent this.
You want to create searching and filtering on an acf field. For this see the section titled
Dynamic $_GET parameters
on this page
https://www.advancedcustomfields.com/resources/query-posts-custom-fields/
