Does anyone else feel like everyone is secretly stressed?

I'm 16, and sometimes it feels like everyone around me is pretending to have their life together.

School, expectations, social media, thinking about the future… it's a lot. The weird part is that when you actually talk to people, almost everyone admits they're anxious too.

So here's my question:

What's one thing teenagers worry about that adults seriously underestimate?

I'm genuinely curious to read everyone's answers.