Is always good to save money while you can, even if your salary is not much, saving a little from it is very important, should incase of emergency, because the need can arise any moment, for instance during the global Pendamic there was lack of money and Economy was down, so many people suffered to feed due to inability to save while they can.
Well, if our economic conditions allow us to save, then we really have to try to save regularly, even if it's only in small amounts. But for those who only have a mediocre income, it might not be easy to do. unless they can be more frugal in extremes. so they'll have some spare cash they can save. but it is not easy for some people. and even the attitude of saving is also difficult to make a habit if we are already used to living in luxury or like to go wild. it takes a strong desire for us to leave the habit of living in debauchery.
You are correct that saving regularly can be tough for persons on a fixed income. It may be necessary for them to be more careful of their spending patterns and make some sacrifices in order to free up income for saving. However, it's vital to remember that even tiny sums saved on a daily basis can add up over time and establish a healthy financial cushion.