Press your lips together to stop the air, then release. No vocal cord vibration.

Americans pronounce payday as PAY-day (/ˈpeɪˌdeɪ/). Stress falls on the first syllable — keep everything else short and quick. You'll hear it in sentences like "I set up automatic transfers to my savings account each payday".
Record yourself saying "payday" 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.
Quickly bounce the front of your tongue against the roof of your mouth. Same as Flap T — a quick tap without stopping airflow.

Start with your jaw slightly open and the front of your tongue forward and slightly up. Glide upward, your jaw closes a little more and your tongue arches higher toward the roof of the mouth.
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 PAY — keep everything else short and quick.