(help) how do i make a trainer in pokeemerald-expansion

[alllstuff]

ive looked around and havent found much i keep getting errors whenever i try

nevermind dont mess around here it will just delete all trainer info

 

[Lunos]

ive looked around and havent found much i keep getting errors whenever i try

nevermind dont mess around here it will just delete all trainer info

You're using the Pokeemerald-expansion, so you have to work with the src/data/trainers.party file.
Open it with any text editor or VSC, check how the data is laid out and use that as a reference point to add new trainer data wherever you want in the file.