How can I speak faster?

Breathing sinks, abdominal muscles push hard ... but these are external skills, and the most important thing is your inner state. Don't be nervous about anything, let go of your vocal cords. If you want to speak fast, you must first pronounce clearly and accurately. Pay attention to the nasal sounds before and after, and roll your tongue flat when you speak. Read more books, but don't follow the script, try to mobilize your inner feelings. Then try to speak faster than before. I suggest you listen to the radio more often and compare it with what you recorded. Take your time and try to make yourself feel that way. After a long time, your state will come out, and the speed of speech will naturally increase.