We have received recordings with several errors that affect the sound quality.
If you are in a place where there are a lot of background noises, e.g. cars, people talking, animal sounds, TV sounds, you should avoid recording at that moment, you can do it later when you find a quiet environment.
If you are in a room where the sound propagates as an echo it will affect your recording, making your audio almost unintelligible, avoid recording in places where there are not many objects around you, such as bathrooms or empty rooms.
If you record using headphones, keep your microphone aside, don’t directly to you, if you record directly, it will make some pops because of the wind entering your mic.