Another Rant incoming 🏃‍♀️

Hello! It’s me again :) For context, I’m a girl in her early twenties (only recently entered 20s)

I just want to ask some guidance. I am the oldest of a ‘daughters’ family. My parents are the epitome of Princess treatment. They pampered me and did everything I could ever ask for. But now that I’ve reaching my 20s, they expect me to act like an adult and do all the things “thoughtfully”. Mind you, I’m not blaming them AT ALL. I’m struggling to act like an “adult”. People have also saying that I’m not “mature enough” or is not “responsible enough” I want to change it. I want to try to be better. Can yall give me tips to improve this? (Idk I wanted to rant about my struggles)