It appears that after putting in that I am Head Of Household and have 3 dependents and only made $600.
Something just doesn't seem right here. It's as if quite a lot of pertinent information has been held back. There is no way possible that you can support yourself and maintain a household (for HOH status) on $600 for an entire year. Much less, support 3 dependents.
Based solely on the information provided, I would expect that someone else supported you and your dependents for the entire 2021 tax year. Depending on the specifics of such a situation, whoever supported you may qualify to claim you and possibly your 3 dependents, as their own dependents. So if you are being claimed as a dependent on another return, then you yourself can't claim any dependents.
So what's missing here? Again, based solely on the information provided thus far, I can't see any possible way to support one's self, three dependents and maintain a household with this $600 in an entire year. Maybe you have other sources of income you're not mentioning here? An example would be a large cash inheritance, which may not be reportable on your tax return.
