On being a naive and insecure teenager

It's pretty much a cliche at this point to have depressed moments as a teenager. That's fine, I kinda get that. However, I realised that lot's of people use "you're a teenager" as an excuse to invalidate everything you say or feel.
I have lots of conversations with friends that might prove that we're naive and think we can change the world like everyone our age did. I also do lot's of things that are objectively stupid and make absolutely no sense. I think "deep" thoughts probably everyone else has had at some point but write them down anyways.
But what's wrong with that?
We need an utopia, a vision of what we want the world to look like, if we want to change anything. Dreams can be the driving force behind change and teenagers tend to have the biggest dreams. If you don't believe you can change the world you won't even try and I for my part don't think that's how I want to live.
Some things might be obvious, stupid or plain useless but they can still help you understand yourself and the world in the process. This post might not make sense but it helped me understand what I'm thinking and maybe this jumble of words will get you to think about some things as well.
That's why I'll be unapologetic about being a dreamer, pretentious at times and talking about injustices I can't fix and societal norms that no one seems to be bothered by.
And I think you should do the same.