Welcome to WeMod, good to have you here.
I haven’t played this game so I can’t advise on save editing.
However, while a trainer currently does not exist for this game, you can vote for one to be made (https://www.wemod.com/cheats/disco-elysium-trainers) in the WeMod software, if you haven’t already. You need to show the trainer makers that there is a great deal of interest in a trainer for a particular game. So get your friends who also enjoy the game to join up and make a request too.
More information on voting for trainers, if you need: