Some of the Israelites wanted to go back to Egypt where they were slaves, because in Egypt they got free fish. FREE FISH. They were willing to become slaves again so that they could eat free fish, and cucumbers, and onions.
4 The rabble with them began to crave other food, and again the Israelites started wailing and said, “If only we had meat to eat! 5 We remember the fish we ate in Egypt at no cost—also the cucumbers, melons, leeks, onions and garlic. 6 But now we have lost our appetite; we never see anything but this manna!”
https://www.biblegateway.com/passage/?search=numbers%2011&version=NIV