In what language to make a parser?

Question

Parsing

I apologize for the possibly not correct question, but this is exactly the starting point from where I will start digging further.

In what language or by means of what is it most rational to make an application (program, service) that will perform the following functionality:
Parsing VK pages, processing information, comprehended VK.

Answer 1

On the one you know

Answer 2

Anyone who can execute the JS code contained on the page.
The chromium library is a great choice to start with.

Answer 3

If you need to pull data from VK, it’s better to use the VK API than to fool around with parsing