been in similar situations myself. and honestly.... we're gonna be black every day - so I had to go out of my way to learn the language earlier in my career than most because there is literally no worse feeling than being stuck in a dialogue that you can't participate in while your career is up in the air
i'm good *now* but man.... i think the main thing that catches folks is that they're either too late to realize they're being isolated. and beyond that, you can't start a visible conflict unless you've got the resolution in your backpocket giftwrapped and ready to go.