While your first semester of high school is important, it's not the only thing that colleges will consider when making admissions decisions. They will also look at your grades in subsequent semesters, as well as your extracurricular activities, test scores, and personal statement. If you do well in your second semester and demonstrate a strong academic record overall, you will still have a chance at getting accepted to a good college.
Here are some tips for improving your chances of getting into a good college if you messed up in your first semester:
1) Improve your grades. This is the most important thing you can do. Make sure to attend all of your classes and participate in class discussions. If you're struggling with a particular subject, don't hesitate to get help from your teacher or a tutor.
2) Get involved in extracurricular activities. Colleges want to see that you're a well-rounded individual, so it's important to get involved in extracurricular activities outside of the classroom. This could include sports, clubs, student government, or community service.
3) Study for and do well on standardized tests. Standardized tests like the SAT and ACT are an important part of the college admissions process. Make sure to study for these tests and do your best on them.
4) Write a strong personal statement. The personal statement is your chance to show colleges who you are and why you would be a good fit for their school. Take your time writing it and make sure to proofread it carefully before submitting it.