I'm sorry to hear this. Component sourcing, under normal circumstances, just requires good communication and organisation skills, and provided you have those you should be OK.
In the current market, though, it requires plenty of experience, pragmatism, and no small amount of cynicism. It's just horrible out there.
The usual chain of responsibility from management -> engineering -> manufacturing -> procurement needs to be completely turned on its head right now. I'm very fortunate that the companies I work with are able to do this.
Plenty aren't, and they'll be struggling all the more.