Everyone gets overwhelmed sometimes. You might be tired, hungry, stressed about an assignment due next week, aggravated by your younger brother, worried about a friend who hasn't messaged you back, and angry about an argument you just had with your Mum. As a result you may want to yell, break something, cry, or all of the above. Overwhelm happens to everyone. Your parents may be tired, anxious about work, stressed about some big bills they have to pay, worried about your older brother's bad behaviour, and concerned about their parents. As a result, they may be less patient than usual.
Here are nine things from https://psychcentral.com and one from me to help deal with overwhelm. They are all useful. Do as many of them as you can. I was feeling overwhelmed tonight. It helped to talk about it and get a hug.