scared to be alone?

i’m a junior at a small high school. i had a boyfriend for about a year and a half and we broke up a few months ago, it’s all fine but i’m so so so scared that no one is going to like me again for ME. i just wish someone could give me advice/make me feel better/give me advice on how to get “back out there” because i’m pretty known and i’m not unpopular, i just have a hard time finding interest in new people and getting to know new guys.