1)Which leagues do you find the most predictable in terms of match outcomes?
2)And which leagues are the most unpredictable, where you can’t always rely on teams' form or stats?
In my experience, Bundesliga is more predictable than any other leagues. They are high scoring, mostly both teams scoring and with aggressive gameplay, there are often multiple goal lead between the strong and weak team so very low chance of a draw.
La Liga on the other hand is very slow in matter of goals. Even the good teams could play a 0-0 or 1-1 draw against a weak team often so I feel its the bad league to bet on.
On the other hand, Premier league stands somewhere in middle, it's fun, good scoring, predictable results but not as predictable as bundesliga. But again we know predictable games would have lower odds, its where premier league comes with its balancing act.