Tile floor，fill it with a caulk compound that is similar in color。

Deeper damage：

Wooden floors may need to be sanded and repainted; tile floors require replacement of damaged tiles.

Keep clean: promptly clean up water stains and impurities to avoid slipping.

Anti-slip treatment: Use anti-slip wax or cotton-soled slippers to increase friction.

Control humidity: Pay attention to the environmental humidity for solid wood flooring to prevent warping or deformation.  ‌