Dificulties webscraping, URL doesnt change on search, remain the same and for every item searched there is no url page, remain the same

I have been thinking first about theoretical way to web scrape this page

https://www.mercadopublico.cl/Home is the Chilean government open business where you can apply to get deliver some services to the state.

Mercadopublico

so I search Camas ( mean "bed" in Spanish)
bed search

So the first barrier I have found is that the URL doesn’t change at all with my search: https://www.mercadopublico.cl/Home/BusquedaLicitacion will be the same at any search

url don’t change

the second barrier , wont change either if I change to the next page. so I cant code a URL changing type on a array as I would like to do.

the third barrier is the most information I want

is in another pop up window from the main one that doesn’t change

pop up window

there the information could be downloaded in a CSV or JSON or either would be webscraped from the pop-up window.

But so far I am not able to get the solution for the part that url doesnt change when I change the search or the page. So I wasn’t able to think so far because I cant get the first part to be done.

I think that webscrape the popup would be the easier because in that point I already have an URL.(the pop up window does have a different URL!)

If you know how or if i need another metodology to do it ( since right know I have been only using BS4 for do it) please let me know in what direction should I walk.

here is my first error i dont know how to solve with ussual code, if you help me with that i cant go further, that is change URL to get the matrix url, because i cant use range method

 # -*- coding: utf-8 -*-
"""
Spyder Editor

This is a temporary script file.
"""

import requests
from bs4 import BeautifulSoup as bs

url = 'https://www.mercadopublico.cl/Home/BusquedaLicitacion'

#problem here because i cant navigate beacuse ajax doesnt let me
params = {
    'page': 0,
    'page1': 40,
}

results = []

for offset in range(0, 121, 40):  #  this method doesnt work on ajax page

    params['start'] = offset

    response = requests.get(url, params=params)
    print('url:', response.url)
    #print('status:', response.status_code)
                    
    soup = bs(response.text, "html.parser")

    all_products = soup.find_all('div', {'class': 'product-tile'})

    for product in all_products:
        itemid = product.get('data-itemid') 
        print('itemid:', itemid)

        data = product.get('data-product') 
        print('data:', data)
        
        name = product.find('span', {'itemprop': 'name'}).text
        print('name:', name)
        
        all_prices = product.find_all('div', {'class': 'price__text'})
        print('len(all_prices):', len(all_prices))
        
        price = all_prices[0].get('aria-label')
        print('price:', price)
        
        results.append( (itemid, name, price, data) )
        print('results')

# ---

# ... here you can save all `results` in file ...
import pandas as pd
df = pd.DataFrame(data = results[1:],columns = results[0])
df.to_excel('results.xlsx', index=False,header = False)#Writing to Excel file

So, I was trying right now to get the urls with this code modification

import requests
from bs4 import BeautifulSoup as bs    
from selenium import webdriver

#set chromodriver.exe path
driver = webdriver.Chrome(executable_path="C:\chromedriver.exe")
#implicit wait
driver.implicitly_wait(0.5)
#maximize browser
driver.maximize_window()
#launch URL
driver.get('https://www.mercadopublico.cl/Home/BusquedaLicitacion')
#identify element
l =driver.find_element_by_xpath("//button[text()='Check it Now']")
#perform click
driver.execute_script("arguments[0].click();", l);

    
url = 'https://www.mercadopublico.cl/Home/BusquedaLicitacion'
    
response = requests.get(url)
print('url:', response.url)
#print('status:', response.status_code)
                        
soup = bs(response.text, "html.parser")
    
all_products = soup.find_all('a', {'href': '#'})
    
for product in all_products:
    itemurl = product.get('onclick') 
    print('itemurl:', itemurl)# hasta aca

#close browser
driver.quit()

but I didn’t get anything print; not sure what failed.