why cant i do it anymore ?

im a ( 17 year old ) guy

i passed high school with the highest marks and now im doing bio maths for 2 years . This is my first year and my classes started july 2023 . My finals are coming and this exam marks are very important . i have been failing for atleast 1 subject since classes started. im not able to study anymore . i have got the title as a total failure from my parent . My trs tells me to keep trying since most of them know me as a topper from last year or all these past years. i used to have that competitive thing but its seems like i lost it . One of my trs told me that i forgot who i used to be and idk. im also in a relationship but idk if it has anything to do with the situation. idk what to do anymore . i have lost all motivation and exams are in 30 days. im tired and frustrated and i feel like i have lost everything . im also tired of being compared and being treated this way. i actually feel like shit and i dont have anyone to talk to.