Open the Google Play Store on your Chromebook
Search for Roblox
Install the Roblox app
Open Roblox
Sign in to your Roblox account
Choose a game to play
Click Play
If the Play Store is not available, enable Google Play in Chromebook settings
If Roblox is not supported on your Chromebook, use the Roblox website in the browser
Make sure your Chromebook is updated
Make sure you have a stable internet connection