Flare your lips and lift the mid-front tongue close to the roof of your mouth. Blow air through without voicing.

Americans pronounce shootout as SHOOT-owt (/ˈʃuɾˌaʊt/). Stress falls on the first syllable — keep everything else short and quick. You'll hear it in sentences like "The game went to a penalty shootout to decide the winner".
Record yourself saying "shootout" 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.
Flare your lips and lift the mid-front tongue close to the roof of your mouth. Blow air through without voicing.

Round your lips into a tight circle. Let your tongue rest in the middle of your mouth, slightly raised.
Quickly bounce the front of your tongue against the roof of your mouth. Don't stop the airflow — just a quick tap.

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 SHOOT — keep everything else short and quick.