Girl's Behavior

Do these people really not like me?

I work around a lot of women. They’re all nice and we do our jobs well. I’m 20 and most of them are older except like 1. Their ages range from 22 -50. I’m not a super social person and I’m aware I have resting b face. A lot of them sometimes will ask me how I am or start a convo occasionally. Sometimes I’ll have a few linger and look like they want to talk to me and don’t and it’s awkward. My problem is that same person has no problem talking to another one of my coworkers. Not trying to sound conceded at all just for context, I am a very pretty girl. I get complimented on my looks and how beautiful I am frequently ( not all the time ). Even a few of my coworkers have called me cute or tell me I have a nice smile or call me gorgeous. Ok so these people especially the ones around my age all have Instagram or Facebook and some of them have each other and all the managers but no one asks for mine! The managers all have each other added and I was even hurt to find out that one of the workers I’m closer too had one of the managers but not me. Noones even asked if I had one. They all have each other’s number and stuff and I feel left out. It’s probably not a looks thing because none of them are hot or anything but I take this personal because I’ve had problems with this in the past. people have implied before that I look too cool for them or have openly asked me if I liked them so maybe I give off a not wanting to be bothered vibe. What could it be?
Do these people really not like me?
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