Let’s do a little thought experiment. You’re a student in elementary school, and you didn’t study for a pop quiz. You know you will 100% fail this quiz.
When you cast a vote for a representative in Congress, it doesn’t apply directly to the candidate you voted for. Instead, your vote gets grouped together with other votes in your district. Candidates are selected based on the number of districts they win, not the number of votes. Think of it like the Electoral College, but for Congressmen instead of the President.