what do students actually do over the summer

i’ve just finished my first year of university and have been so bored over the summer so far. i originally planned to find a part-time job over summer but nowhere in my home town is looking to hire for just the summer (i’ve tried genuinely everywhere). i’ve been trying to wake up earlier to not sleep my days away like i did during term time, and i’ve realised theres a lot of time in the day that i don’t know how to fill. i do have a few hobbies but even they only keep me busy for like an hour or two each day, and i go to the gym to keep me busy most days. but everyday i end up with at least like 5 hours with nothing to do except scroll on my phone, and i’m so fed up of being dependent on it. i do have fun things planned with my friends occasionally but the vast majority of my days i’m bored. does anyone have any advice on how to fill my time more productively?