It is very tough on 7k single income, almost impossible I would say. Back when I made that amount on single income, even with 4-5 months bonus and not giving parents allowance, no car, cheap
HDB, we barely saved anything.
I have no car, cheap flat, no branded goods, several kids, still spend about 10-12k a month.
Mostly on food and groceries, 1.5k parent allowance, helper etc.
Quality food is expensive and one meal out with the family may cost 150-200. We also eat steak, seafood, sashimi very often at home.
Now close to 25k pm can finally start saving.