To use Audio Eraser on the Galaxy S25: Open Gallery, select your video, and tap the AI button. Choose Auto for AI to detect/remove noise (wind, crowd, etc.) or manually adjust sliders for voices ...
For scuffs or small marks you can use a suede eraser or a clean pencil eraser, but for stubborn stains, lightly apply some white vinegar onto a damp cloth in circular movements and let air dry.