You might be able to get successful people to admit that they were in the right place at the right time, but they’ll almost always qualify that with how much effort they put in to be in that situation.
However, you're only getting that ball if it's hit in your direction. You can attend hundreds of games and still never have one hit close enough to catch.
While missing one or more preparation steps (e.g., attending a game) may rule out the possibility of catching a game ball, for every person who does catch one, there are dozens if not hundreds of people who prepare at least as much and still never do.
Being able to afford that wouldn't be lucky, it would imply some sort of per-existing wealth or at least a solid support network.
I was presenting it primarily through the lens of a mindset that is undaunted by failure and having the motivation to avoid giving up prematurely.
Successful writers and entertainers often share stories about how they were rejected dozens and dozens of times before finally getting noticed. I have friends who wanted to change careers by moving to a different industry and they must have submitted hundreds of job applications before they managed to get their junior level role.