When something like this was happening to me, I heard people were saying "Oh, he is just lucky". It kinda made me a bit mad because of how much work I've put in a particular thing behind the scenes and in general how unlucky I was with many other things.
Then I stumbled upon the concept of "luck surface area" [1] and it's kinda clicked with me. Yes, luck is a factor, but you definitely can increase your chances. Cold emails from the post is one of such instruments.
[1] https://umbrex.com/resources/tools-for-thinking/what-is-luck...