Baby breastfeeding machine?

This phrase usually refers to a "breast pump" (used for expressing milk), a colloquial term. If that's what you mean:

A breast pump is a helper tool that allows mothers to express and store their milk. When used correctly, it supports milk production and lets the baby continue receiving breast milk when the mother is apart (work, health situations, etc.). However, it's not a "replacement for breastfeeding"—no device can replace the baby's sucking reflex from the breast, the mother-baby bonding, and the mouth-swallowing coordination that develops through direct nursing.

When choosing a pump: whether to use manual or electric, single or double, depends on your daily routine and pumping frequency. The general recommendation is that double electric pumps save time, but the ideal choice is different for each mother.

I won't recommend specific brands; choosing one that fits your needs and budget, ideally based on user reviews and return/exchange policies, is healthiest. The milk storage conditions after pumping (refrigerator/freezer times) and hygiene practices are just as important as the pump itself.