How do I get a job?

hello po, im a SHS undergrad (idk if that’s the right term to use) and I moved here in manila to go and get myself a job since opportunities here are pretty much more compared to my hometown, but i’m struggling to find one because: -i haven’t finished highschool yet -im only 19 years old

I know na looking for a job isn’t easy, but can someone give me a few of their advices? especially with my situation? it would really help😅 thanks po

P.S. my mom helped me with the requirements since i’m a newbie