Can you make a new trainer for bl3 that works again? For steam
Hello there and welcome to the community. 
Please read the recent posts in the official thread for the trainer, such as this one: Borderlands 3 Cheats and Trainer for Steam.
You will often find information like this in the trainer’s official threads, which you can locate using the forum’s search feature. 
Thank you.
(Thread title changed to avoid users confusing it with the official one).