Fortunately, if you click View Barcode or Transfer the ticket to your wallet, my experience is that you can just take a screenshot, message your friend the barcode, and the code works fine.
It is a travel document purchased on websites, mobile applications. There is no need to print tickets thanks to e-tickets. In other words, e-ticket or online flight tickets have replaced the print ones. Passengers and airline company makes a contract through e-tickets.