How to make a bot / script so that it can insert certain data into the site (questionnaire, etc.)?

Question

JavaScript

At a certain time, the registration of the application takes place and whoever filled it out first, he ate it, I need to help a friend so that she does not have to fill in the data for the questionnaire during the races, because. it fills one and a half minutes, and its competitors 8 seconds, what to insert and where to insert it, the main thing is to understand how to do it all, you can just drop the links if such a resource already exists, thanks for your time.

Answer 1

1) write a browser extension (or try to find a ready-made one). But this is not very simple. The entrance to the topic is not easy
https://devacademy.ru/article/kak-sozdat-rasshiren...
2) programmatically send a request with the fields already filled in to the site where the application is registered.

Answer 2

Well, let's say you create variables, then you create variables equal to certain site data, you drive the values ​​into the bot. Well, in fact, he must write data from himself to the site.