Sharing Our Innermost Thoughts

Do you guys feel like some people you know ,you are kind of casual friends with but lowkey they don’t like you? Like i have a few friends who are sweet and nice to me on my face but something seems off to me. Like one of my friend, we are very Frank to each other , we have a group of 5 people and we celebrate birthdays together, it was her bday some time ago , and she didn’t invite me , she said she forgot , but she invited my best friend and all others but not me. She kept making excuses but i don’t know i don’t feel good about it. And as I said it’s a group of 5 people there’s one more girl who was always so weird to me , she keeps following and unfollowing me on Instagram, removed me from her snapchat ,and last year it was her birthday and we took 20-30 pics of us together but she said they got deleted by mistake , but she sent the pics with others and even posted on her story but not my pic. Whenever we take pictures together she says they get deleted or make some excuse but never send them to me and she never lets people post our picture together. She always seemed mysterious towards me. I feel like she doesn’t like me even though i never did anything wrong to her , i always liked her and never said anything bad about her either but why does she behave like that!? Like these kind of people make me doubt about myself so much m i feel like they don’t like me and there’s something not baad about me