Depressed and stressed

Hey girls Recently for about two months now I’ve been extremely stressed with school I take 4 AP courses and its over whelming the classes are easy in general just I dont know how to stop being lazy when i get home, I usually wait till the last moment to do my work also I’ve been depressed because I get bad grades in school and my parents are constantly comparing me to older brother and I honestly an lonely like I have wonderful friends I can talk to but I want someone to love and I want someone to love me I’ve been single for two years now and I just want someone to make me feel loved in a special way but I dont have anyone and I dont know how to find someone like that but I dont know girls what do you think I should do with my life currently any advice would help !