Round your lips into a tight circle. Lift the back of your tongue toward the soft palate and add voice.

Americans pronounce worker as WUR-ker (/ˈwɜrkər/). Stress falls on the first syllable — keep everything else short and quick. You'll hear it in sentences like "The machinery has automatic shutoff features for worker protection".
Record yourself saying "worker" 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.
Stress falls on the first syllable, not the others. Stretch WUR — keep everything else short and quick.
Americans use a relaxed retroflex R — the tongue curls back rather than rolling. The R is one continuous sound with the vowel before it, not two separate sounds.