Put trivet in the bottom of pressure cooking pot. Add chicken broth and celery. Add the turkey to the cooking pot breast side up and sprinkle with the onion soup mix. Lock lid in place, select High Pressure and 25 minutes cooking time.
When beep sounds, turn off pressure cooker and use a natural pressure release for 10 minutes, then do a quick pressure release to release any remaining pressure. When valve drops carefully remove lid. Use an instant read thermometer to check to see if the turkey is done. It should be 165°. If it isn’t 165°, lock the lid in place and cook it for a few more minutes.
Instant Pot Turkey Breast https://afewshortcuts.com/instant-pot-turkey-breast-recipe/