Better exposed filters module
This module was tested on 11th February 2020, using Drupal 8.8.1 with Site Studio 6.0.0 using version 8.x-3.0-alpha6 of the module.
There are no known issues using Better Exposed Filters with Site Studio.
When using your filter in your view template, set the 'Filter display type' to the Drupal default to use the widget selected in your view.
Link to the module
The module can be found on Drupal.org here.