I wasn't really broke due to working 5 jobs (two main part-time jobs and then gigs on top of that) but lived like I was. I didn't party during college but instead studied and got my ALL my work done for the week Mon-Thurs so that I could go home Fri once class was over at 2pm and then work the closing shift at Chick-fil-A. Saturdays, I'd put in a 9 or 10 hour shift. Sundays I would relax and head back to school.
Lived frugally, ate PB&J for lunch instead of a meal plan on campus, chose housing a few miles away (cheaper) and walked/took the bus to class. Flipped textbooks (would browse lost and found sales and load up on as many textbooks as I could for $1 each then put them on Amazon.. made a few hundos every time). There were always campus events going on for dinner so would attend and eat free.
I'm 26 now and in a good spot. Still don't have any spendy hobbies really, I usually just work even in my free time but the schedule is different (late nights, early mornings, some super slow days in between interspersed with a busy busy busy).
Have lived with roommates and still do. When I saved up enough for a downpayment on a cheap condo, I bought it and then rented out the other rooms and lived for free. Sure I could afford to live alone but now I have a townhouse and it's big enough that we don't get up in each other's space that much.
Rarely drink, and when I do it's usually because I'm on a date where the guy pays. I stick to a set grocery list. Don't eat at expensive downtown restaurants.
Still have side hustles going, like dog sitting and look on Craigslist for easy, odd jobs. Main job is helping people buy/sell homes-- have been intentional with my branding and marketing strategy so now I am largely sustained off of referral business (after only 1 year in the biz, though really it's been 5 if you count my time as a landlord).
IMO, your 20s are not to be wasted away by partying and drinking and brunching. My early 20s were spent killing it and now that I'm in my mid-late 20s, I'm still hustling but not as desperately... haven't inflated my expenses much (anything that is inflated, I figure out ways to make other people pay for it i.e. housing) and I've hit a better stride.. it's more of a coast now rather than pedal to the metal (better lifestyle anyway).. but I'm still going pretty fast and not stopping anytime soon :)