In manual [monkey testing](https://testomat.io/blog/what-is-monkey-testing-in-software-testing-a-complete-guide/), a tester interacts with the software randomly without any specific test cases. They may click buttons, enter random text, or navigate through the application in an unpredictable fashion. Manual testing is useful in early development phases or exploratory testing when the tester wants to see how the software reacts to arbitrary inputs.
https://testomat.io/blog/what-is-monkey-testing-in-software-testing-a-complete-guide/