who has had ivf fail and then success

my friend has been through one <a href="https://glowing.com/glow-fertility-program">ivf</a> that ended in miscarriage and one that did not work. she does have thyroid disorder. but got eggs genetically tested.Dr wants to do egg retrieval again since there is only one egg left. anyone have any encouraging success stories after a failed <a href="https://glowing.com/glow-fertility-program">ivf</a>? or any advise on how to make <a href="https://glowing.com/glow-fertility-program">ivf</a> work better?? also advise to me on how I can help in this time ?