Struggling with friendships - any advice, sisters?

assalamu alaikum, i’m a girl at uni and i’m wondering if it’s normal to find it hard to make or keep friends. sometimes i worry there’s something wrong with me that makes it difficult to connect with girls my age or to keep friendships for long. during high school i had a big Muslim friend group and alhamdulillah those were some of the happiest times. i loved them a lot, but we had a huge falling out in our final year. we all messed up in different ways, but most of the blame ended up on me, and i finished school with no friends. one girl in particular made things really painful - she made me sit by myself, discouraged others from talking to me, and lied to teachers to get me into trouble. it took a real toll on my mental health, but alhamdulillah i’ve recovered from that dark period. after reflecting and taking responsibility for things i could change, i focused on strengthening my relationship with Allah and worked on my mental health. i felt better for a while, alhamdulillah. now at uni i joined a new group of friends (some Muslim, some not), and i genuinely hoped this time would be different. but sadly it’s falling apart again, even though i haven’t known them long. it makes me feel like i’m being tested over and over. is there something wrong with me, or maybe i’m not meant to have close friends? when i see sisters with close hijabi friends, i pray i’ll have righteous friends like that too, but sometimes i’m afraid it won’t happen for me. could any sisters share advice or wisdom, insha’Allah? what helped you build lasting, supportive friendships? jazakallahu khair.