One problem, other comments hint on the same thing, is that poverty is not an absolute, it's relative. We would consider ourselves poor if we lived as a family of five in a tiny early 20th New York immigrant's appartment, even though we'd be much better off than a feudal peasant living in a straw hut with no electricity and a distant water well (the "working class" of its day), which in turn would be must better off…
In almost every country in the world there are people that:
Are almost dying because of a lack of food
Are almost dying because of being outside at the wrong time
I would call that poor.
I am speaking from second hand experience. And I am from The Netherlands, a country with a fairly good welfare system if you know how to deal with a bureaucratic system. There are a few people that can’t deal with that because of whatever undiagnosed issues they have.
People with a low and livable income are IMO not poor, depending on if there is a good healthcare system.