How do you act more like your age?

I just turned 25 and I feel SO immature. It doesn't help that I also look younger than my age. I suffered from depression before, I'm doing better now, but I still cannot digest my age lol.

Whenever we do weekly retro, my workmates will talk about their investment, building apartments, their cute child, and other adulting sht, while I talk about how I make my ✨️ceremonial matcha✨️ (soy milk + honey + authentic matcha). Whenever I hear some of my batchmates getting married or having a baby, my first thought is holy sht, teenage pregnancy!!! Idk what's fucking wrong with me hahahaha

I honestly want to act more like my age and stop being too carefree 😌