This isn't uncommon considering that (1) we're in a post-pandemic recovery, (2) you're probably a student in transition from high school to university (a first year). Mental health concerns are very pronounced from what I have seen in this demographic (greater now than pre-2020). I often make time for students because I know it's difficult for them.
It is not unusual to feel cast adrift in a new place, with different faces and perhaps not feel a sense of routine as you would have as a high school senior. That sense of mastery isn't there; you are learning the rules of the game and probably don't have someone to guide you.
Academic pressure and the need to perform make students feel exceptionally nervous. They often tell me their ambitions for a professional school (medicine/law) or graduate school. Hence, grades matter, and they feel disheartened when they aren't meeting their expectations. Therefore, I never treat students based on their grade point average/performance (which is subject to change). Rather I consider them more of a whole student/person with a life that extends beyond the walls of academia and instead choose to focus on their behaviour.
It's easy to feel like a student number only, particularly if you're not engaged with on-campus activities. Academic motivation can dip if you're not feeling 100%. And it's perfectly fine if you aren't. Unfortunately, many folks never vocalize this to others or engage in self-denial. Consider looking into the mental health resources available at your university/college. Or think of volunteering for a worthwhile organization to feel more connected. It may help.