is it depression?

recently i found myself struggling with the feelings, the nature of said i wasn’t quite familiar with. i started being on my phone almost nonstop, for some reason rejected some hangout invites from my friends (and that part is pretty confusing as im a pretty social person and like to consider myself an extrovert), i started crying more often (the looming fear of not getting into any uni and wasting my future staying in the most bullshit country for years is a pretty scary outcome to me and that might’ve been the reason), and also started to eat the unhealthy amounts of food because of getting some kind of “animal hunger” when i wasn’t even hungry.

although i did go to gatherings sometimes, hangout with my close friends etc etc it almost every time felt like a temporary solution for the permanent problem. i thought it was normal behaviour for a bored teen on his summer break but quite recently i realised that my motivation for doing pretty much anything besides bare minimum hygiene, eating and doomscrolling just… vanished? i’m really concerned about the whole situation and would like to hear any thoughts or suggestions. thanks