נִדְב֣וֹת פִּ֭י רְצֵה־נָ֣א יְהוָ֑ה וּֽמִשְׁפָּטֶ֥יךָ לַמְּדֵֽנִי׃
Die Gaben meines Mundes [mein Lobpreisen] nimm gnädig an, o Herr, und deine Vorschriften lehre mich.
Rashi on Psalms
The freewill offering of my mouth Words of appeasement that my mouth offers You. Every נדבה, is an expression of appeasement.