Singer, to tell the truth, the most important thing in this society now is star singers and actors, which depends on opportunities, but you are still young and can be prepared. Anyway, powerful people don't worry about being unsuccessful. You say you have a good voice, but you don't know how good it is. I suggest you look for a professional teacher to help you and give you some pertinent suggestions.
If you are in the second grade, you are really young and can practice your voice, but I think the most important thing is to read more and study more. The connotation is long-lasting and very important for singers. Let's just say that time flies when Faye Wong sings red beans. She has a beautiful voice. A few years ago, a singer also sang "Poisonous Perfume". Her voice is good, too, but do you think Faye Wong who sings Poisonous Perfume and Red Bean can be on the same level? No matter how popular the song of pig and mouse loves rice, it can't be respected and remembered for a long time. In short, if you have a good voice, make good use of it. If you have the opportunity to be a singer in the future, be a singer who sings songs with connotation, and the songs will be liked and respected by people.
You can often go to the original music base to see how others do it. I wish you success ~ ~ ~