I don't know how common it is today, but I know when I was growing up there was a ton of pressure on us to know what we wanted to do forever by the time we were in high school. It was so bad that I went into a depressive shut-down, with weeks of barely eating or talking to anyone. Adults would try to reassure me with, "Nobody knows what they want to do by your age," yet simultaneously I was told, "You need to go to college so you don't flip burgers forever." College comes along with needing to declare a major, which means deciding what you want to focus on despite being so young. So I don't need to know, but I do need to know? Very, very confusing.
The school system has been failing for a long time. I saw the writing on the wall in the early 00s and wanted nothing to do with a system that seemed to be more about extracting money and wasting time than anything else. Thankfully, like you, I love learning! I never stopped picking up skills and challenging my mind, and in a world of emergent AI it's become more important than ever to keep exercising one's brain.
In the end, I'd say you're probably less alone than you feel. A lot of people who seem confident about what they plan to do are either doing what they're told, or taking on a "fake it til you make it" mentality. Check back on them in ten years and see how many of them actually stuck to their plan - it will be surprising. A lot changes in one's 20s. Friends drift apart (physically and psychologically) as they begin their independent journey through life.
I get the impression that I don't need to tell you not to fall for social media where people only show their best selves, but it bears noting. Comparing one's self to others is a surefire way to make one feel bad about themselves, and social media exacerbates that trend. As you see friends going on and doing things, try to remember the old phrase, "The grass is always greener on the other side." Some of them are hiding their struggles, and may secretly envy you and your decisions, even if they don't tell you so.
Anyway, just keep up learning topics that interest you. The idea of a "dream job" is propaganda, and by admitting it doesn't exist for you, you help show it for the bullshit idea it is. Not everyone dreams of working. Not everyone should dream of working. There's nothing wrong with finding a job that supports you (which I do recommend, as you really never know what can happen) while finding meaning and fulfillment from things that don't make you money.