are friendships necessary

I (20F) moved out to study in a new city and almost lost contact with most of my female friends before that for a while, I miss the feeling of having someone I can trust with things, be wild with, and share secrets and talk about everything without feeling their jealousy in the air or that they are not being as truthful as I am, thing is I am a person of details and some friends I thoughts were best friends started changing, I noticed and I dissociated from them subconsciously, I don’t know if i should look for this kind of friendships where I can be fully myself or it’s just not worth it and I am better off without a so called best friend. I do understand that in this period of life things start to change, and so do people! Thoughts?