Press your lips together, add vocal cord vibration, then release.

Americans pronounce beauty as BYOO-tee (/ˈbjuɾi/). In "beauty", the "t" between vowels sounds like a quick "d" — the tongue briefly taps the ridge behind the upper teeth. This is called the Flap T, a hallmark of natural-sounding American speech. It comes out as BYOO·tee. Stress falls on the first syllable — keep everything else short and quick. You'll hear it in sentences like "Absolute beauty is better than basic belief".
Record yourself saying "beauty" and play it back. The mic stays on your device — nothing's uploaded.
2 syllables, 4 sounds. Tap a syllable to jump to its row, then explore each sound's mouth shape and how it's made.
The textbook way isn't wrong — it's just not how anyone actually says it.
In "beauty", the "t" between vowels sounds like a quick "d" — the tongue briefly taps the ridge behind the upper teeth. /t/ or /d/ becomes a quick tap [ɾ] — sounds like a soft D. The tongue briefly taps the ridge behind the upper teeth.
Stress falls on the first syllable, not the others. Stretch BYOO — keep everything else short and quick.