Giggs was speaking on the Rio Ferdinand presents podcast and was asked about the root cause of United's problems.
"Recruitment," he said. "The recruitment in the last, and I was part of it, the last 10-12 years has just been not good enough. Any business, any football team need that recruitment.
"You need a bit of luck. You need young, you know, we had young players coming through.
"So you had a group of young players together with the best players in Britain, you know, the (Eric) Cantonas coming in, (Andrei) Kanchelskis, (Peter) Schmeichel. So you need a bit of luck that you have them young players coming through.
"Recruitment. Time," Giggs continued. "I like the manager, I like (Ruben) Amorim. I think he's charismatic, he needs time, he needs a few transfer windows, he needs backing, but also he needs help on what is a United player and what a United player looks like."