Until you see someone like you doing something, it is not a social norm. This is why representation in STEM matters.
Your career is a minefield of opportunities where you can invest your energies.
It is definitely not your job to make people believe in you, but it is your job to believe in yourself and be bold to go after what you want in this life. If you succeed, you will be an inspiration to other little girls who aspire to be just like you.