You will need a good demo of your singing. If you are serious you will need to receive radio airplay. You can, by working music like a professional, make your music career pay its own expenses. It may come as a shock to you, but even the major label artists pay for their own recordings. The label may advance the recording money and then deduct it from the singer's royalties before the artist earns a dime.
New artists pay all of their own expenses first.
Many singers think they want a career in music but they don't want to do the work necessary to succeed. You have to work to build your career in music - like any other career. It takes time to develop a career, to become known and to be in demand for concerts. It just does not happen over night. You must have patience and be prepared to work professionally.