How to i load a save file that i downloaded

So i downloaded a save file for Pokémon ultra sun so i can trade over some Pokémon that aren’t available in my version. The only problem is i don’t know how to play the save file. If anyone knows can you pls tell me how.

In order for us to provide better support, we need to see the log generated by Citra. This guide will walk you through how you can obtain the log file: How to Upload the Log File.

Do you actually own Pokemon Ultra Sun?

the actual game for the 3ds no but i have it for citra so yes