Just because you aren't given the credit and haven't been recognised for your work doesn't mean you have to give up or stop. You don't always need credit, other people do not always have to know what you are capable of doing as long as you do.
“If you love a flower, don’t pick it up. Because if you pick it up it dies and it ceases to be what you love. So if you love a flower, let it be. Love is not about possession. Love is about appreciation.