Hello,

01. Navigate to Appearance > Widgets > Edit Woocommerce layered nav widget and select the query type “And”.
https://ibb.co/tHB53gQ

03. Please add this code to the Theme Settings > Custom CSS > Global for the sticky buy now button.

.wd-sticky-btn-cart form.cart .wd-buy-now-btn {
    display: none;
}

Best Regards.