1)Which leagues do you find the most predictable in terms of match outcomes?
The English Premier League and La Liga are the most unpredictable. Small teams sometimes pull surprises by beating bigger sides. Clubs like Manchester City, Liverpool and other top clubs usually lose to small teams.
2)And which leagues are the most unpredictable, where you can’t always rely on teams' form or stats?
The French league is highly predictable. You would always know that PSG will defeat almost all the clubs in the Ligue 1. The Bundesliga once had One winner over 10 years. It is easy to predict that Bayern will win games.