Modern smartphones have a few connectivity options, including Bluetooth, Wi-Fi, 4G, and 5G. However, connecting a new device can be confusing, especially for people unfamiliar with the device pairing process.
However, if they're compatible with Google Fast Pair, connecting them to your Android device or Chromebook is a seamless task that's completed in seconds.
if the process still isn't working, check that Fast Pair isn't deactivated on your device:
Open your device's settings.
Search for Fast Pair.
Tap Devices.
Make sure Scan for nearby devices is turned on.
If this still doesn't do the trick, ensure Google Play Services notifications aren't turned off:
Open your device's settings.
Go to Apps & Notifications.
Tap Google Play Services.
Tap Notifications and make sure notifications are turned on and allowed.
guide on how to locate your lost device, which works on Android smartphones and tablets, as well as accessories compatible with Google Fast Pair.
https://www.androidpolice.com/how-to-find-lost-android-device/
Open your device's settings.
Search for Fast Pair.
Tap Devices.
Go to Saved Devices.
From there, you can take different actions for each device:
Forget to unpair the device.
Rename the device to give it a more familiar name than the manufacturer's default one.
Find Device to locate your accessory, which can be useful for buds you may have lost.
You can also prevent devices from being automatically saved to your account by turning off Automatically save devices.