I believe it's a personal experience, some prefer to play on weekends because of work, others during the week, it varies a lot from person to person, I heard that some players prefer to play on Fridays and Saturdays because they face possibly drunk players, thus having an advantage , others say they prefer to play in the early hours of the morning as the competition is less, well, it's up to each person to know which time or day best fits their profile, is an answer that only you can discover.