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I speak 3 languages non-natively, 2 at C1 level at least for oral comprehension.

So yeah, I have done that.

Yea I have seen people claiming they speak C1 when in fact they dont. Do you work profesionally with those languages?

I speak C2 Spanish and C1 French. I have certifications for both. I'm currently learning Italian, and expect to move from A2 to C1 within a year.

Its really not that hard if your study correctly and you're able to spend significant time in a country that speaks the language.