Open the Google Play Store on your Chromebook
Search for Roblox
Install the Roblox app
Open Roblox after installation
Sign in to your Roblox account
Choose a game to play
Click Play
If the app is not available, enable Google Play Store in Chromebook settings
If Roblox still does not work, use the Roblox website in Chrome
Make sure your Chromebook is updated
Make sure your internet connection is working
Use a keyboard and mouse or trackpad to control the game