I feel lost and don't know what to do

(sorry if the spelling is bad english is not my native language)

I am 19 years old and I just dont know what to do with my life, i am currently failing mechatronics engineering and honestly i dont really care for it, i always said my biggest fear in life is doing something for work that i dont enjoy everyday and ive had internships and didnt enjoy any single one, I dont even enjoy the classes i take it just feels like a waste... i think about the future in this line of work and it all seems just boring like something i wont enjoy, but i also have the feeling that if i fail ill become a bum. it feels like a waste in talent on my part because ive always been good with maths and chemistry and physics and yeah we have some but its all about steel this robot that all just boring jiberjaber. i look to the future and think if i can still do something else. i dont want to live in my parents house my whole life, theyre bloodline depends on me. i dont even know what to ask for advice. nothing motivates me not money not the betterment of the world it all seems futile kind of. Maybe its an exestential crisis of some kind i dont know. and there isnt really anyone to talk to, like yeah i have friends but like they are the same age what do they know? if i talk to my parents i feel as if i will disappoint them and dont even get me started on my sister. i feel so spread thin i have to worry about money school work all the works. i just dont know anymore i dont know what i want to do i dont know what i can do who to go to. i feel as if im on a island in the middle of the atlantic cold no food and the sun is setting.

has anyone felt like this? what did you do to fix it. please i really dont know any more.