Residuals from Simple Linear Regressions

How we get residuals after running a linear regression. I use a smaller version of the dataset found at: https://www.kaggle.com/datasets/shivachandel/kc-house-data. For a better explanation on how to run and interpret linear regression, check these out: Basic Linear Modeling: https://www.youtube.com/watch?v=D8kIu1kjsgE&t=2s Simple Linear Regression: https://www.youtube.com/watch?v=oAoMzvHKeSM&t=69s Interpreting Linear Regression: https://www.youtube.com/watch?v=rLkysIyO7-U&t=229s