Wearing cheap clothes or driving an old car doesn’t make you broke. You got a family to feed not a community to impress.
If you are not rich to wear expensive clothes, your job is not suitable to dress up, or the car you have is old, do not be sad or think about these things. They say nothing about who you are.
What you need to do is to do your best, and know how to spend in the limit of your income. Because you also have a family to support.
You need to save money for your children to eat well and go to school. You also need to save in case of illness or unexpected incidents.
That is your goal, that is who you are. You don’t need to make up your appearance, you don’t need beautiful clothes just to impress society. After all, flashy things that don’t make your life better are meaningless things.