I will open accounts on some exchanges soon. I would like to prioritize one where I will be able to practice for free. From what I have read and seen so far, Binance seems to be considered the best exchange overall. However, I didn't see any mention of being able to practice for free on Binance website. So which exchanges would be best for that?
Yes you could try some trading simulator there are so many of them you just have to look in the internet.
I think most of the best exchange doesn't offer that kind of game since there are already some dedicated website for such thing.