That really doesent help... but you can try. Can you, in any way shape or form provide a little information. What server where you on before roll back, and what server after roll back. Do you have any eggs (Pokémon that you got from eggs) Where you doing anything in particular. Where you switching servers a bunch? Anything else that can be helpful? Also - message ProfessorHemlock, Aaron, or dmatias7 on Discord. They will be able to further assist you.
Picture of your pokedex of you hovering over the ditto in your pokedex. We will see the seen: 1 and caught: 1 if you don't have that we really can't help. We have a lot of people claiming they lost either a shiny, or a ditto or a legendary.