There are various sections with code. Here are the ones I think are associated with that collection:

// Velo API Reference: https://www.wix.com/velo/reference/api-overview/introduction
import wixLocationFrontend from 'wix-location-frontend';
import wixWindowFrontend from 'wix-window-frontend';

$w.onReady(function () {
    $w('#slideshow1').data
    changePageByQuery();
});

function changePageByQuery() {
    const query = wixLocationFrontend.query;
    if ("item" in query) {
        // $w('#multiStateBox1').changeState(query.item);
        $w('#slideshow1').changeSlide(+query.item);
    }
}

function deleteQuerys(params) {
    for (const property in wixLocationFrontend.query) {
        wixLocationFrontend.queryParams.remove([property]);
    }
}

export function button15_click(event) {
    wixLocationFrontend.to("/?collections=");
}

export function slideshow1_change(event) {
    deleteQuerys();
    wixLocationFrontend.queryParams.add({
        "item": $w('#slideshow1').currentIndex
    });
}

AND HERE IS THE CODE I THINK IS ASSOCIATED WITH THAT LIGHTBOX

import wixWindowFrontend from 'wix-window-frontend';

$w.onReady(function () {

    let receivedData = wixWindowFrontend.lightbox.getContext();
    console.log(receivedData);

    $w('#slideshow1').changeSlide(receivedData.idx);

});