How did the participants in the performances differ from the actors of our time (Athens)?

The whole point is that the Greek theater itself was quite different from the modern one. Firstly, the performances took place only during the day and in the open air. Secondly, only men could play the role. That is, only men were actors, and women were not allowed. The performance itself took place during the day. To convey emotions, the actors used special masks that covered their faces.