Reputations take years to build and a weekend to wreck. Rebuilding one takes consistency, not speeches.

Credibility accumulates slowly and collapses quickly, because it is made of repetition. One weekend can undo a lot of accumulated evidence, since a single dramatic data point is easier to remember than three years of ordinary reliability. Explaining does not restore it, because words are exactly what the situation has made unconvincing.

Do the repair that is owed, once, then stop talking about it. Be reliable in small visible ways, on time, doing what you said, over months rather than weeks. People update quietly and without announcing it.