I would definitely divide this question into several parts in this topic.
1. At what level of income, per 1 person in your family, it is possible to accumulate savings
2. Is it possible to set aside savings if you have one job and no investments, passive income and other sources of income.
3. How best to store deferred savings

Regarding the first part, I explain - just taking and allocating 1/3 from the amount of income is not mathematically difficult. The question is - how much does this income cover the needs of life? If this money is not enough or "a stretch" is enough to support yourself or your family - what kind of savings can we talk about?