Pokemon Lets Go .sav file

I was wondering if there are any ways to open and edit the save file.
There are at this moment no possible way to “link” the Yuzu emulator to another Yuzu emulator to “trade” a pokemon.

To evolve certain Pokemons you need to trade them. My question is: Is it possible to change/modify the save file so I can manually evolve them? There are also some pokemons that are exclusive for Lets Go Eevee and Lets Go Pikachu. My goals is to obtain every pokemon.

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.

Check out PKHeX, you can edit saves from each game of the Pokemon main series, including Let’s Go.
Be sure to always keep a backup when messing with save editing