Customizing Collection Filters on Showcase theme

I have added a custom Apply Button in the filters sidebar section of my store: https://apbxo3n79w9b2jbh-56425939102.shopifypreview.com(head over to Shop-> Catalog from Nav).

But the theme’s original codes are overriding the JS for my Apply Button. How do I prevent the filters from automatically getting applied and changing the url? I want them to be applied only when I press Apply button.

Please help to solve this issue.