visiting friends' homes
This is the most amateurish way, but it takes great courage.
Sometimes some of their friends also run out of money at the end of the month.
If they ask "what are you doing here" just say "visit" and
immediately check the food
selling valuables
You can sell your belongings, panties, UNDERWEAR, or your clothes, if you have money, you can buy it back.
fasting
If the above does not work, then all you have to do is hurry up, and wait for your parents to send money, @Haejin_CryptoAnalyst , 
begging on the street
I do not recommend it but if you want to do it, do it
