Many iOS users also feel that each set of apps they open will consume system resources. As more and more apps are opened, system resources will be occupied by these background programs. Therefore, they will “habitually” forcefully close these unused apps and release them. Occupied RAM.
Apple recently stated clearly on the official description page that when recently used apps appeared, these apps were not opened, but in standby mode, so that you can browse and multiplex. You should force close the app only when it is not responding.
In fact, some developers have stated that iOS has its own set of methods for managing resources. Instead, each time the app is intentionally closed, additional system resources are required to close these "standby mode" apps, and it becomes more power-hungry.