You get what you pay for. There is a reason why burgers are cheap. Nowadays, there are many small shops selling burgers. The quality of burgers varies, and some of them are really unpalatable.
But they are all targeted. For example, some burger restaurants in front of schools do not have high requirements, because most of them are bought by students who have not eaten in the morning. They are not selective about what they eat, so they fill their stomachs first. As for the taste and quality, I have no time to worry about it.
There are different levels of needs for the consumption of various commodities, and the same is true for burgers. Some are expensive and some are cheap. The cost of cheap burgers must also be very low, so the lack of safety and hygiene of the ingredients is a matter of concern, so be careful when buying them.