Real-World Experience
I’ve had a Passimian for a while now, and I’ve found that its Fighting and Psychic weaknesses can be a bit of a challenge in battles. While it’s a powerful Pokémon, it can be easily taken down by Pokémon with these types of moves.
Everyday Use
In my experience, Passimian is best used as a support Pokémon. Its Helping Hand ability can boost the power of its teammates' moves, and its access to moves like U-turn and Knock Off can make it a great pivot. However, it’s important to be aware of its weaknesses and to use it cautiously in battles.