I agree. I think a good starting place would be assessing the cost of living by region or district, and then anyone who makes below that amount should receive a supplementary allowance (funded by the wealthy, of course. If they were paying people fairly then nobody would be making below the cost of living).

Other things should be in the purview of public goods, of course. For countries that don't already have it, healthcare and education should be top priorities. They should be seen as investments in a healthy society, not as merely handouts to individuals.

Eventually food should be produced and distributed by public (state-owned) entities, at-cost rather than for-profit. But that's a longer-term goal that needs careful planning and implementation, so pushing too hard for it too soon could derail progress on other priorities like healthcare, education, and guaranteed basic income.