If you're looking to Download Garmin Alpha on your Chromebook laptop Then read the following guideline.

Connect to the hunt with the Alpha® LTE dog tracker, using cellular technology (subscription required). Use your smartphone to track your dog’s movements with the Alpha® app. Connect your Alpha LTE tracking system to a compatible Garmin VHF dog tracking system (sold separately) to leverage either LTE or VHF tracking signals. Use the Alpha app to navigate and mark waypoints with integrated mapping.