<333 i love that you're doing that for your mama
i will recommend approaching some NICE venues. like independent coffee shops, eco shops, edgy fashion shops, wholefoods, bakeries... if you get nowhere with the nice places, then approach chains like fast food and retail
i don't want you to have to suffer at such a young age and retail and fast food really drain every last drop of hope and energy from you. they exploit kiddos and pay in pennies. if there are kind places that have spaces they will be the best for you. like cute coffee shops.