Would you dump her or give her a chance to mature?

My girlfriend is 22 yo and it shows. She's a cool girl and very gorgeous, but her immaturity gets on my nerves. I feel like I'm dating a kid.
She's always on TikTok, drooling over the dumbest shit and her mind is stuck in highschool mode. It's hard to explain in detail, but overall it's annoying.

Should I just break up with her and find someone older, or put up with it for a few more years and hope she grows out of it?

(The relationship is young and I don't love her yet, or this wouldn't even be a question)
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(I'm 28 by the way)
Would you dump her or give her a chance to mature?
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