Relax with your socks. You can wear socks under the sandals. But :
A) The socks should not be above the upper belt. Pull it off so that it ends under the strap.
B) on monotonous sandals the looking socks should differ (but at the same time combine well) in color.
If the sandals have contrasting details, the socks should be as close to them as possible.
D) If a hole shines on your finger, you can safely forget all of the above. A hole creates its own ensemble of styles to which these rules do not apply.