It's trivially easy to come up with definitions of consciousness that support your point. But there isn't one of them that it is trivially singular and above all others from a scientific point of view. If you say, "I know consciousness when I see it," you are just making the point that consciousness is attributed by the beholder. Idem if you affirm "I'm conscious". If you say, "only humans are conscious", you are socially attributing consciousness. Now, I don't want to be argumentative, I honestly haven't been able to figure this matter in a decade of armchair internal debate[^1], and it seems I have some company.
[^1]: Having this internal debate makes me believe I'm conscious, but now that I have seen LLMs in action whose "internal debate" is more lucid than mine, I honestly question that "internal debate" is sufficient.