When you play songs, the effect of playing songs is definitely not very good. Secondly, when you play a song, try to calm your mood, don't think about FC, don't be swayed by considerations of gain and loss, and turn this into a process of enjoyment. You will find yourself unconsciously having FC, which is sometimes amazing in retrospect.
If it is a personal state, you don't need to be excellent. As long as you think playing well is the best state, don't play for too long. When playing songs, people are in a state of concentration. Being nervous for too long will cause fatigue, which will increase the error rate, so it is best to have a rest for a while.
In fact, hand speed is not very important when playing songs. When playing songs, I feel that my hand speed is not enough, which is completely psychological. The real reason is that your reaction ability is insufficient, and the other is that you don't remember the sense of rhythm.
LL's songs have three aspects, reaction > rhythm > notation.
Deliberate notation is of little use, because you have devoted yourself to playing and have no time to concentrate on reading. What's more, the random spectrum in the future is disorderly, and the notation is completely useless.
The second is to find the right rhythm. If you don't have a sense of rhythm, you will naturally be in a hurry (that's why you hit hard and make many mistakes, and you have to hit a few good ones or even bad ones, because one mistake leads to confusion of rhythm, and he has to get back his feelings).
Of course, the ability to respond is the most important, which directly affects the error rate of playing songs. There's no way to be quick. You can only practice your reaction speed by playing songs constantly. Some big touches can play songs at a glance, and FC means that he has strong reaction ability. When it is difficult to play master, those songs with extremely high difficulty depend entirely on people's reaction and rhythm.
In short, practice more and adjust the game speed to the state you think is most acceptable (nest speed 9). I wish you a great move at an early date.