Here's why:
* Zubat can't learn Mean Look. Mean Look is a move that is not in Zubat's learnset, meaning it cannot learn it by leveling up, breeding, or using TMs/HMs.
* Mean Look is a Ghost-type move. Zubat is a Poison/Flying type Pokémon. Pokémon can only learn moves of their own types, or moves that have a special connection to their species.
If you're looking for a way to trap your opponent's Pokémon, you might consider using other options like:
* Wrap/Bind: These moves can be learned by Zubat and other Pokémon, and they have a chance of trapping the opponent for a few turns.
* Other Trapping Moves: There are a number of other moves that can trap opponents, like Block, Ingrain, and Arena Trap. You can find a list of trapping moves by searching online or looking through your in-game Pokédex.
I hope this helps!