It's important to pursue your passion and dreams, but it's also important to have a backup plan in case things don't go as expected. While being a singer can be a challenging career path, there are other ways to make a living in the music industry, such as songwriting, composing, producing, or working in music management or marketing.
You could also consider getting a part-time job or pursuing higher education in a field that interests you, so you have a stable source of income while you continue to pursue your singing career. Having a backup plan will provide you with a sense of security and enable you to continue following your dreams without the pressure of needing to make a living solely through your music.