Why Do English Second Language Students Have Speaking Problems?

There are currently an estimated 2 billion English learners in the world. In many countries, schools now require English classes. However, after years of studying English, students still have difficulty speaking English. When speaking, proper grammar can be useless if speaking is not clear and understood by the listener. It is time to try something different because the current methods are not effectively working.
Learning English grammar rules is not enough, and it is impossible to memorize every English conversation. Situations will be different, and making unique conversations is necessary in the real world.