eigentoren

In a sentence

• Das Fußballspiel endete mit mehreren Eigentoren.

  The soccer game ended with several own goals.

  In this sentence, 'eigentoren' refers to literal own goals scored by the team accidentally.

• Seine Bemühungen, das Projekt zu retten, waren letztendlich Eigentore.

  His efforts to save the project ultimately became own goals.

  Here, 'eigentoren' is used metaphorically to describe actions that backfired.

• Ich hoffe, in meiner Präsentation keine Eigentore zu schießen.

  I hope not to incur any own goals during my presentation.

  This usage expresses the desire to avoid mistakes or blunders that may detract from the presentation.