2. Develop good habits, don't smoke, don't eat greasy fried food, drink plenty of water, drink some tea that is good for your throat and exercise more.
Protect your voice, don't shout loudly, don't shout at the top of your lungs, and so on.
4. Show your voice confidently. Everyone's timbre has its own characteristics, so don't sell yourself short, but sing it in public to build confidence.
5, practice breath, improve lung capacity. Sound should be rooted in the lower abdomen, through the back of the spine to the back of the head, and then to the back of the mouth. The whole sound should be upright and backward. Singers need a lot of lung capacity to sing, such as some long, stuffy melodies, so they will be flushed and panting after singing.