Some doors require someone on the other side to know you exist.

Some opportunities require a person on the other side who already knows your name. No amount of quality behind a closed door produces that, because the mechanism runs on recognition. It is not fair exactly, and it is how many doors work.

Identify a door you would like open and ask who is behind it. Make yourself known to that world in some small, honest way over the coming months. The point is to be a name rather than a stranger when it matters.