Hey there
Right now there aren't any active promo codes, maybe some for new accounts which aren't older than 72hrs., but besides that, there aren't any I'm aware of.
Usually, they are posted on discord or you could find them on Youtube after a Content Creator made a video about it.
Cheers, Strangiii
From where did you find the codes man? I'm not able to find any
You will most likely see it posted here first. It's not like there are multiple, or even one, active at any time. If I'm not mistaken the last one that was available to all players was s1mple which was early December, so 2 months ago or more.