I have not found any separate radio button in Maestro, using a group affects the alignment.
For example i have to keep the radio button and a text box in same row and a text box should depends on the selection of radio button. Here i am not able to use radio button group since it affects the alignment.
Is there any alternate way for using it?
Maestro does not have a separate radio button component.
The layout you've described does not always translate well to small screen (mobile) devices - consider the field wrapping below the selected radio button and above others - this confuses some users and I'd recommend having questions follow a clear sequence.