Improving your problem lies not only in vocal cord closure, but also in your training methods and daily gas habits.
1, you have to practice bubble sounds, and this is definitely inevitable. If you want to take a shortcut, I advise you not to. However, as long as you can speak normally, you can make this sound. The point is, try to practice when you first get up, either leaning back or lying down, which will be more conducive to your voice. Thirdly, open your mouth as wide as possible and open the temporomandibular joint. Then, from the high notes, gradually decline. Find the feeling of bubble sound and try to consolidate it. If you can consolidate it several times, you can try to pronounce it with different vowels.
2, the sound is leaking, this can also be solved.
First, from now on, let's break away from fashion and try to sing bel canto. The simpler the better. Then, remember this state and try to exhale in this way on weekdays. At first, it will be strange, and even others will think that you are sick, just like the now famous CCTV announcer, who practiced hard in his early years. But be yourself.
Second, if you don't practice, you will be lacking. Therefore, the necessary aerobic exercise should be. This is a fundamental thing. If you only practice skills without repairing the foundation, if you have seen martial arts, you can imagine that even if you practice moves every day, can you reach the level of Dugu Jiujian? Even if you are lucky enough to do it, you are not in a world of moves and skills, but in a world where many singers have "internal strength". You can't go far without practicing internal strength. For a simple example, a person who doesn't vent much in bed can sing even if you let him sing, even if his skills are excellent. Do you see it?
Third, nowadays, vocal music teachers are all like that except famous teachers. You have a solid foundation, you have an excellent foundation, and you can enjoy those icing on the cake; You don't have a good foundation, and you can't expect your teacher to give you timely help to change the status quo.
3. The wrong way to cultivate explosive power is narcissism and quenching thirst by drinking poison. If you talk about explosive power, there is a person named Chen. If you know it, you can understand what explosive power is. But people's training methods are definitely not like yours, so they don't have your problems. And if your current social status, family background, network resources and economic capital can't let you in and out of the real inflow, then stop the wrong way of practicing and make up for it from the foundation. It won't be so boring and difficult to fill the foundation. Judging from what you said, you have reached a certain level. What you should make up is the lack of foundation.
4. It's empty or slippery at the bass. Anyway, I just can't sing well. Obviously, you won't use gas at a high level. Moreover, you lack sufficient understanding, skillful adaptation and successful experience of lasting vocal cords and lasting singing.
Therefore, if you try hard to catch up with high notes or deal with some special sounds, there is only one result: when you really go on stage to sing, many times, you will still lose confidence endlessly, even if it takes a long time. Even because of this, I was distracted when I was singing-I really had a problem because I was afraid of it (I still couldn't sing well when I was in trouble).
Because: occasionally sing well, every time.
Another friend said "the sound of the sea" is basically the same as what I said before. Same thing, different names, and so on. You can also refer to the Italian giant caruso, who left some singing skills and practice experience.
6. If you are willing to work hard. After that, what you eat and drink, and how to cooperate with maintenance and treatment from the medical level. The root cause is yourself, and everything else is auxiliary and secondary. The human body has its own healing ability. As long as you don't work hard, as long as you are not disabled, as long as you don't completely lose your voice, under normal circumstances, you can raise your own vocal cords. Don't eat too much blindly, or you will be in trouble if you don't eat well. Unless you really know the knowledge of vocal cords, instead of just reading online content or some staple food books that are difficult to distinguish between true and false, just follow the cat and draw a tiger.
Go and practice.