There are hundreds of very good universities in the US.
Perhaps the top ranked 10 or maybe 20 get a large number of applications from students whose academic record is close to perfect. This tiny handful of top universities use extracurricular activities as one way that they decide who to select from a very long list of very strong applicants.
However, there are a large number of very good universities that you can get accepted to with very little in the way of extracurricular activities. Some won’t even ask.
Also, a wide range of different activities can be considered “extracurricular”. A job can be a very good extracurricular activity. If you write articles for a student newspaper that can count as an EC. Tutoring another student counts. Helping an elderly relative or younger siblings can count if you do it regularly. You might want to think about whether you would want to join the chess club, or some other sort of competitive game club.
If you are an accomplished writer, have you gotten any article or paper published? Publishing in a student newspaper counts. If you are an accomplished artist, have you entered any contests? One daughter did at one point win something in a contest and get to attend an event where all of the many winning paintings were displayed. It was cool seeing her work there. She walked away amazed at how many students there are who made very good paintings, but she still enjoyed the experience.
It is generally a good idea to do something in life outside of just your classes in school. However, you should do what you want to do.
In terms of university admissions, I wouldn’t worry about it.