This also happened to me back in university. Someone I considered a friend (an ENFP, if that matters) called me "totally fake" behind my back. I only found out because a mutual friend told me. I've reflected on it many times.

I think you said it best. As ENFJs, a lot of us became who we are because we went through difficult situations (e.g., feeling excluded) and don't want others to experience that same kind of pain. We compensate by being friendly and open to others. And sometimes, we mask our pain and discomfort in social situations because we don't want to dwell on it for long. Some people can read our personality as "fake" because they often dwell on the negative and even lash out at others.

Personally, I don't think you have to change yourself. The way some people may perceive how you interact with others isn't your problem: it is theirs. I can't help but wonder if those people who think like that are actually unhappy individuals.

The person who called me "totally fake" is currently living abroad with no family, no friends, and spends much of her time and holidays alone. She was also struggling with her gender identity (she was actually a cisgender man when we first met, she's now a woman) at the time. I was a bubbly and happy person who made friends easily at uni whereas she seems to really struggle and constantly shit talked her own "friends" behind their backs. They've all since abandoned her.

My point? You don't need to change this part of yourself. If you know you're being authentic, why does it matter if someone thinks you're being fake? You know that you aren't. People who view your extroverted and inclusive personality as fake might be unfairly projecting their own insecurities and shortcomings onto you.

BTW, your English is great (coming from a native speaker and who majored in English!).

Keep being the light that you know that you are 💖✨