Recently, Stadia has an update to support iOS devices, which means you can now able to play Stadia games directly on your iPhone and iPad. To start playing Stadia games on your iPhone or iPad, then you need to Sign in to Stadia.com on your Safari browser, but make sure your device is updated with iOS 14.3 or later to support this Stadia update, Google currently focuses on the iOS test to continually develop and enhance Stadia on iOS devices.
(Reminder: First I have to tell you Stadia currently not available in India, you check out the Stadia availability in your country from here.)
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