All of the stimulus checks.

Hello, 

I am a struggling 19 year old, who has been filing taxes since my first job in 2017-2018. 
I have not received any of the stimulus checks, and as I said I am struggling, so it’s be very helpful in these trying times per-say. 
my question is, how do I go about finding out wether I am eligible for the payment or not?

my parents are useless with this stuff because they just got theirs deposited to them. I’m confused as to why I haven’t received any payments..