I don’t want it to sound bad, but I’m sure it will sound like that.

You are 21 years old. Unless you are not telling us something, you just started living. You haven’t learned anything about anything.

What kind of meaningful work do you expect to complete?

If you truly want to make a difference and have a purpose, wouldn’t it make sense for you to learn something about the world or the people in it?

I might be gatekeeping it and you might be a special kind of person but statistically that is unlikely and your desire seem to come from all the motivation stuff that people put out there.