What is there to do!!

i feel like i’m falling into a slump just sitting around my house all day but it feels so difficult to find fun environments in BR. i’m not 21 yet so can’t go to any fun bars which seems like the only thing to do. concerts are fun but it seems like less local ones have been hosted this year than usual. i’m trying to find some kind of entertainment or hobbies in the city but it’s just empty feeling which really sucks. anybody got any advice?