How to reserve something faster than everyone else through autocomplete?

Question

Browsers

Hello everyone,
In general, on site X (not Ebay and other sites) you need to reserve something, the reservation opens at a certain time and you need to fill in some data fields. The problem is that there are hundreds of applicants for the desired product, and in a couple of seconds after opening someone is already faster. I tried through Chrome plugins, where autocomplete happens in a second and then send an application, but unsuccessfully. Now I thought about writing a bot or something like that. Maybe someone will tell you in which direction to dig?
Thank you for your attention ;)

Answer 1

There is an excellent autohotkey program. You can create command macros in it: keystrokes, mouse clicks on coordinates, text input, and the like. If everything is well thought out, everything should fill up as quickly as possible.
The only negative is that you need to write code for each macro yourself) The writing language is very simple. I'm not a programmer, but I quickly figured everything out using other people's examples when it was badly needed.