Here's a complete save I downloaded back in 2018. Nothing in it is legit, other that the story completion lol.
It has 100% completion of game storyline/side events. it includes Shiny Living Pokedex (some or half of the Pokemon have 31 IVs/0 EVs), misc. Event Pokemon, a competitive party, and all TMs & more.
I think I downloaded it for the same reason, not sure why else I got this. I might have more if you need a different save file.
Emerald v.25414.sav