I feel so alone

for context, i’m a 16 year old girl with a very loving family and a very loving group of friends. i know im privileged in that sense. but sometimes, i just can’t help but feel so alone and like no one cares about me. my common sense knows it’s not true, but I just can’t help it. is this normal? does anyone else feel like this? what should i do? please give me advice🥺