What do u want to be ?

I'm 18 soon 19 and I left school have no job and I still don't know what to do. I mean I have sm idea of what I want to be and that the problem how am I supposed to choose ? I love to learn sm and I love art and sciences, I want to be a biologist but a marine biologist too and astrophysicist but a nuclear physicist too I love art and nature so I want to be a photographer too and a florist I love animals so I thought of becoming a vet too and a doctor too even if Idk in what area yet and pharmacist too and more. But even with all of that still the same problems... Idk what to choose because I can't do everything... I want to learn study and discover new things but I don't like to focus on one thing Idk if I'm able to keep doing the same thing for YEARS I love to learn yes but I don't like to do the same thing for too long I love to learn make a pause and focus on something else and come back and Ik I repeat myself but that just how I feel. I'm not scared because Ik I'l going somewhere I just don't know where and when yet so I'm not scared just confused and sad I have to choose one thing. Am I the only one in this situation ?