Raise the back of your tongue to touch the soft palate. Add vocal cord vibration, then release.

Americans pronounce garbage as GAR-buhj (/ˈgɑrbədʒ/). Stress falls on the first syllable — keep everything else short and quick. You'll hear it in sentences like "The garbage disposal stopped working and needs to be repaired".
Record yourself saying "garbage" and play it back. The mic stays on your device — nothing's uploaded.
2 syllables, 5 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 GAR — keep everything else short and quick.
Don't pronounce the first syllable too fully. The unstressed syllable reduces to a schwa — the lazy "uh" sound — in casual speech.
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.