Sign in to your Chromebook with your Google account
Open the Files app
Select the files or folders you want to back up
Right-click and choose Copy
Open Google Drive in the Files app
Choose a folder in My Drive or create a new folder
Right-click and choose Paste
Wait for the upload to finish
Check the Google Drive folder to confirm the files are backed up
Make sure your Chromebook is connected to Wi-Fi during the upload
Keep Google Drive sync enabled on your account
Use Google Photos or Google One if you want automatic backup for photos and device data