Keep your text away from the very top and bottom (about 200px) so it doesn't get covered by UI icons or the search bar.
Do you have in the image, or would you like a different caption style ? 750x1333 Genius on Cute in 2019 | Harry potter ...
It looks like you’re drafting a social media post (likely for Pinterest or Instagram Stories given that aspect ratio) focusing on Harry Potter "Genius vs. Cute" vibes from around 2019. Keep your text away from the very top