People with established careers are terrible sources of advice on how to break into their chosen field. When I was a baby writer, I attended numerous panels about getting established, where writers a generation or two older than me explained how to charm John W Campbell into buying a story for Astounding Stories. This was not useful advice. Not only had Campbell died six days before I was born, but he was also a fascist.
I have two careers, one in tech and the other in SF, a peanut-butter-and-chocolate combo that’s got a long history in the field, and I am often asked how to break into both fields. I know an awful lot about how to sell a story to Gardner Dozois, who stopped editing Asimov’s sixteen years ago and died two years ago, but I know nothing about pitching contemporary SF editors.