I am deeply sad to hear that you could not enter the finals.I quite understand how you feel now.
I knew that you had tried very hard for the competition. Maybe you were too nervous, which affected your performance. However, as we know, failure is the mother of success.I do hope you won't lose heart and will get ready to try again. Still you have many more chances to try for you are so young.
Fate only can be changed by working hard, so if you go on practising singing,I am sure you will succeed next year.
I'm terribly sorry to hear that you didn't enter the finals of the singing contest.
I quite understand how you are feeling now. You have been doing excellently and your failure is not your fault. As we all know, failure is the mother of success.I really hope you won't lose heart and will get prepared to try again next year.I'm sure you will win. Things can only be changed if you work hard. As long as you continue practicing singing, you are certain to succeed next time.
Don't hesitate to let me know if you need any help.