I’m learning American Sign Language by myself, but I’ve realized what’s the use of it?

So, where can I use my knowledge of sign language? I don’t know any deaf people, and I live in the Philippines( I don’t know if we use ASL here or some other sign languages) .

I’m starting to learn ASL (American Sign Language) and of course, I’ve got questions. Here’s one.?

I learned the sign for “hungry.” Right hand, C shape, move down from chest to stomach. But is that one sign sufficient for “I’m hungry?” By the way, how do you sign “I” or “me”? Thanks. .