On what to write such a thing?

Question

Bots

In general, an order was received to write a bot for a bookmaker, which should make bets on its own.
I am fluent in php but have never experienced this before.
Who did this, share your experience . I
’ll clarify, the problem is in working with the bookmaker itself, how is it done? look for api for each, or you need to somehow imitate the behavior of a real user, and so on