Automate login testing

I have an excel file with a column for usernames and a column for passwords.

I’d like to test each login to make sure the login is successful. If the login is not successful, I’d like to store that username and password combination in a separate excel file and then go back to login page and try next username & pass combination.

The login page consists of just user id and password text boxes which I am able to data scrape using uipath extension for chrome.

Any advice on how to go about accomplishing this task? I’m a total beginner to uipath.