I am often left in open-mouthed astonishment when watching matches as players will return short backspin serves the same way, with simple long pushes to the opponent's backhand, over and Over and OVER!!! There is little attempt to vary these returns or do much of anything to mess up the server. And yet they seem surprised that the server is ready for these simple pushes, usually with a big third-ball loop attack. If the opponent serve and pushes, then perhaps pushing the serve back long over and over will work. But that's mostly at the lower levels. If you want to reach the higher levels, you have to do a bit more with the receive.