Hey Jaimatjak,
It looks like you're coming from the article: Find your lost AirPods That would have the best information regarding locating your AirPods.
While there isn't a way to manually adjust the volume of the AirPods ping, when using Find My to play a sound on them, the sound should gradually get louder.
"Play a sound on your AirPods
If your AirPods are near any of your Apple devices and connected to Bluetooth, you can play a sound to help you find them. With AirPods Pro (2nd generation), you can also play a sound to help find your charging case.
- Open the Find My app.
- Select the Devices tab.
- Choose your AirPods from the list.
- Tap Play Sound to play a sound that gets louder gradually.

Make sure that your AirPods are not in or on your ears before you play a sound."
Thanks!