First of all I want to tell you that avoid asking short or one-liner questions because it makes it harder for the reader to answer you and they look low effort and might not get you serious replies. If you explain your thoughts in detail It can help you get useful answer.
How can be an one liner is harder to read? actually it's harder to read a paragraph which having more than 3 lines.
One liner isn't always low effort too, whether he got a serious or troll reply, we can't control other users the way they post.
I see his question is serious, no bullshit, just a straight valid question.
So if you have a low-income and don't have discretionary income coming then first and foremost you should reduce your expenses as much as you can so you have discretionary income.
Most people can reduce their expenses, but the main problem why they still don't have enough saving is, their parents are keep asking for money. The higher the salary, the higher they will ask, if the child not give enough money, the parents will blame the child for disobedient.