Don't know where you live or anything besides you being 14.
But uh, most people around here won't hire unless you're 15+, have a working permit if it's not in the summer (obtained from school), and/or know you have a reliable source of transportation (like being able to drive). Then you can work at like McDonalds lol
but really I don't know any place you can work especially being 14 and "on the weekends" but i'm definitely sure you can get some basic job if from one of your relatives company if they put a good word in for you?