How to increase volume of find my items?

Settings, Notifications, Find my, only toggle for sound on or off. Why is volume not adjustable? I read volume increases with time, but it never gets louder and doesn’t sound for long enough. All these air tags I just bought are useless if I can not hear the sound they emit.

Under settings, sounds, are air tags connected to reminder or default alerts? Really their should be an option for “find my” listed here in sounds.