Navigate javascript form via Python Request

I am trying to scrap data from a webpage that shows a limited amount of data, and requires the user to click a button to navigate to the next set of records. The webpage achieves that by sending GET requests to itself.

I tried to write a code in Python that would send a GET request to the page hoping to get the next set of results, and write a for loop to retrieve subsequent results, but I am always getting the initial sets (apparently the website is ignoring my params)

This is the website I am targeting:
https://portaltransparencia.procempa.com.br/portalTransparencia/despesaLancamentoPesquisa.do?viaMenu=true&entidade=PROCEMPA

This is my code:

url = "https://portaltransparencia.procempa.com.br/portalTransparencia/despesaLancamentoPesquisa.do?viaMenu=true&entidade=PROCEMPA"

r_params = {
    "perform": "view",
    "actionForward": "success",
    "validate": True,
    "pesquisar": True,
    "defaultSearch.pageSize":23,
    "defaultSearch.currentPage": 2
    }
page = requests.get(url, params=r_params)

I expected that this generated a response with data from the 2nd page, but it is responding that from the first page.