when the iRS gets to look at whether or not you get stimulus, if your 2019 return has not been processed the iRS will look at the 2018 return. However, the actual credit will be computed using your 2020 return. what is going out now is an advance. if you support yourself (contribute over 1/2 your support) , your parents can't claim you. you should then file 2019 claiming yorself and make it your parents problem. unless circumstances change 2020 you should claim yourself
