Sieht die Wunde gut aus?

This can be good, is a must-have wound on the elbow you could also let them dry in the air. But again: under a plaster a wound heals faster.

However, the wrist is exposed to many external stimuli as well as a lot of movement, so it would be better to maintain moisture. Since with a lot of movement the crust could rise and these germs are again exposed.

No.

With a plaster, the wound remains moist. This damp wound mite reduces itching and minimizes the risk of a scar forming. In addition, plasters protect open wounds from germs and dirt. So it applies: plasters keep the wound moist and this accelerates the healing.

https://www.oekotest.de/health medicines/flaster-or-fresh-air-so-health-small-wunden-am-besten_12544_1.html

However, it is often advisable to create a wound dressing or a plaster. Thus, the wound is protected from drying and remains clean – which supports wound healing.

https://www.aok.de/pk/magazin/koerper-psyche/haut-und-allergie/pflaster-und-verband-die correcte-hilfe-bei-small-infringements/

Let’s get paving on it, patches change more often. Under a plaster, the wound does not dry, so it can heal faster and better. Although crust protects against germs, it can heal better in wet environments.