It doesn’t let me play on ipad because I don’t have a controller
Whilst it's easier to play using a controller, you should be able to use the touch controller on iOS.
This article has more info on the on-screen touch controller:
https://support.google.com/stadia/answer/9609786#touch_gamepad
Whilst it's easier to play using a controller, you should be able to use the touch controller on iOS.
This article has more info on the on-screen touch controller:
https://support.google.com/stadia/answer/9609786#touch_gamepad