Staying in a toxic group gets harder to undo with every week you stay.

Groups build up shared history, and history is what makes leaving expensive. Every week adds more inside jokes, more people who would take it personally, more of your ordinary life routed through those same names. None of that means you were wrong to be there. It just means the exit gets quieter and heavier the longer it waits.

If you already know, you do not need more evidence. Start by building one thing outside it, a team, a shift, one other friendship, so that leaving is not also arriving alone. Nobody has to announce anything.