Only you know best 😊 Do the math: what is my income and what are my expenses. The difference can go towards savings. As an exercise, think about how much you would need to sustain your necessary expenses for a while or how much money you would need to buy something you need but don't have the full amount.

And more practical - if you want to buy a laptop that costs 5 000 lei and you have an income of 4 000 lei/month, you will need to make a budget of all your expenses, prioritize them (what you can do without, what you can't). Then work out how much money you can put aside for the laptop and how many months it would take.