i feel lost

i feel like I'm losing myself. i lost my best friend of 7 years as well as my boyfriend so i feel really alone. i do online school so i don't socialize with other people. i feel like I'm getting more depressed and don't even come out my room. god knows when's the last time i was even outside. i rarely eat now and sleep all day. it's getting bad again and i want it to get better, i just dont know how. :(