98% of Steam trainers will work for Epic versions and vice versa. Simply press the Fix button in the trainer and manually link the Epic version’s .exe.
Then launch the game first before the trainer.
WeMod trainers are made only if the game is popular with the WeMod community (the software detects how many WeModders have the game). Just because thousands of people are grabbing a free game, it doesn’t mean all of those thousands of people also using WeMod. 