Therefore, as you have accepted in both those two steps to trade your Raichu, we are not able to recover it for you as it would be unfair to all the others players that accepted the loss of their Pokémon once traded to any NPC if we would recover your Pokémon and not their.
I'm sorry to disappoint you but i hope you can understand, please let me know if something is unclear and if you have any further questions.
Have a wonderful day !
Can you spell me Raichu or Pikachu for me? Please Level 1