I was depressed because I didn't know enough

I (17M) was depressed and terribly bored for brief periods 5 years ago just like any person may be during COVID. Now I think it is just because when I was 12 I didn't know enough about the world and the various thoughts and perspectives of life that I have right now that "prove boredom to be impossible". (The idea of "boredom" itself is interesting so how can I be bored. Everything is relative e.g. when I'm alone and segregated from the world I feel desolated but when I'm in school I'm segregated from places like Hogwarts anyways. Whenever I feel terrible I can always improve by running until I'm so tired that all that I want to do is rest (and then resting will make me feel amazing)). I think now I had already experienced enough wonderful things that I'll unlikely be depressed again in the future

I mean, today I just discovered the website Reddit and I think it's very wonderful since it resolves so many of my concerns in the past, to the extent that I kind of wonder why people having access to Reddit is still depressed

Still, I think I'm always blindfolded from thoughts and experiences now. I'm worried that people get depressed because they are blindfolded

idk sorry if this post is very naive