Getting into fishing without anyone to take me

I have been wanting to go fishing again for around 3 years now. I constantly beg my parents to take me fishing, but they just don’t seem to care. I am 15 years old, so I can’t drive yet.

My grandpa used to taking me fishing every once in a while, but he passed away a few years back. My mom knows how to fish, but she just doesn’t have the same eagerness to go fishing as me.

My dad is from the Bronx, so he knows nothing about fishing or really anything outside.

I just need some ideas on how I can go fishing without needing anybody.