The so-called inability to find the feeling is actually not feeling the emotion of the whole manuscript. It's like playing a tune, and if you don't understand the emotion and melody of the piece, then your performance will seem stiff and emotionless.
After getting the manuscript, you should first read it more or read through it several times, rather than starting to record it when you get the manuscript. This is to give you a holistic understanding and perception of the manuscript. Through multiple readings, you can gradually feel the emotion and tone contained in the manuscript.
After a rough understanding of the emotions expressed in the manuscript, imagine the scene of the manuscript in your mind as much as possible, and substitute yourself into the scene. You can imagine yourself experiencing the events described in the manuscript, feeling the emotions and atmosphere in them. Through this imagination, you can understand the emotions and intentions of the manuscript more deeply.
After that, we look for the vocal state corresponding to the emotion and continue to practice it several times. It's like looking for the feeling of a character in a performance, you need to find the right emotional state and match it. Through repeated practice and feeling, you can gradually grasp this emotional state and incorporate it into your performance.
That way, when you read the manuscript again, you won't have a stiff feeling. You've understood the intent and emotion of your manuscript and found the vocal state to match it. Your performance will become more natural and fluid without appearing stiff and emotionless.