I am guessing here a bit…
But there is one thing that I have seen a few times. There is a lot of pressure in the US on students to do more. More ECs, more APs, more rigorous classes, more leadership positions, and so on. I do not personally think that this is healthy.
A lot of us at some point in our lives hit a point where suddenly it is not easy any more. This was a relatively common experience for students at MIT, where I got my bachelor’s. Some students there breezed through high school, and then hit a wall either in freshman year, or sophomore year, or with the upper year classes. Many of us have to learn study skills and time management in a hurry under pressure. Most of us got through this okay, but with some stress and some impact on grades.
One consequence is that it is not that unusual for a student to have one bad semester, or perhaps one bad class during one semester. A grade of “C” may have happened (even to me at some point as an undergraduate student).
Then we learn from this. We start managing our time more carefully. We start putting in a stronger effort, including on weekends in many cases.
I think that if you come back from this with solid grades it should be fine.