Poison, Fighting, Bug and Ghost.
Try using bug...
Psychic and Ground
psychic type pokemon are weak against psychic steel and dark
A psychic, dark, or steel type Pokémon.
You can beat it easily with Dark, Bug, and Ghost type Pokemon. It is least effective by Psychic, and Fighting.
Bug, Ghost, and Dark type moves are all super effective against Psychic-type Pokemon. As these are considered basic fears of the mind and would be the weakness of a Psychic which fights using its mind.
Psychic and Ground
psychic type pokemon are weak against psychic steel and dark
Fighting moves are weak against Flying type Pokémom, and Psychic moves are good against Fighting type Pokémom.
Fighting type pokemon are weak against psychic attacks
The fire type is not super-effective, not very effective or ineffective against the psychic type. Fire type moves deal unmodified damage to psychic type pokemon.
To an extent. As a ghost type, it gets STAB for ghost type moves which are super effective against psychic types. However, as a poison type it is weak to psychic type moves. If you can hit the opponent's Pokemon before it hits you, you are safe.
dark type moves are a good choice against psychic
A dark type is good against ghost and psychic types
A psychic, dark, or steel type Pokémon.
You can beat it easily with Dark, Bug, and Ghost type Pokemon. It is least effective by Psychic, and Fighting.
Bug, Ghost, and Dark type moves are all super effective against Psychic-type Pokemon. As these are considered basic fears of the mind and would be the weakness of a Psychic which fights using its mind.
Generally, Fire-type Pokémon are not good against Fighting-type Pokémon. Find a Fire-type Pokémon that can learn Ground- or Psychic-type moves, such as Earthquake or Psychic, since those are super effective on Fighting-type Pokémon.