Why did they make Cassie act so dumb in Seasons 2 and 3 of Euphoria

I related to her so much in Season 1 and then in season 2 they just made her act like so dumb and annoying like she wasn’t like that before it made me really sad because I saw myself a lot in her in the 1st season because of her trauma and she was so sweet and just wanted love even though she was called a hoe she was a really inspiring character but in the 2nd season they made her hurt someone she really loved and cared about, I don’t want her to make an o******* and then get humiliated even more I just want her and Maddy to get past their trauma