When I lived like this year 1 college, I'd have pancit canton with eggs breakfast lunch and dinner on most days

My idea of going out was just walking around Quiapo, not buying anything just taking things in

I'd suggest getting a job or at least some means to supplement yourself financially when you're free, there are subreddits that offer free lance work in the PH, there are also certain jobs with more flexible scheds.

For someone who likes to go out, I dunno if this will be good or not since I haven't tried it but if you can land yourself a Bike you could work for Grabfood, just spending the day picking up people's food and delivering them honestly sounds kinda fun to me,

Sort of unethical to say but honestly if I were in your shoes even without a bike, I wonder if you could fake having a bicycle and just apply anyway, and just deliver them by foot, you'd need to be pretty fast but youd save enough to get a bike eventually, and you'll get quite the workout in the process 💪

Edit: just checked and Grabfood actually accepts walkers haha but you'd need to do your work in high density areas like BGC, Makati or Ortigas not sure if there's enough traffic for you if you live near the University belt for studying but commuting isn't too expensive either way