Some doors become easier after the room on the other side changes.

Sometimes a closed door has nothing to do with you and everything to do with what is happening on the other side. People change, situations shift, needs arise, and something that was impossible last year becomes straightforward. Persistence at the wrong moment can even make the later attempt harder.

If something has been refused, consider whether the answer was about circumstances rather than merit. Note it and revisit later rather than pushing now. Ask what would have to change on their side, and watch for it.