How do I get this piece of plastic (see pictures) back into my laptop?

Somehow it doesn't work from both sides. I would be very grateful if someone made a video or something similar. Would send as a solution.

You have to clip that in there somehow. We don't know more here. You have to have a look. Otherwise, watch YouTube by google your model. Since you don't even state that, we don't know more than you just wrote.

Apart from the fact that we (as always…) are faced with the problem that no one knows which model this is, the easiest way to get you started is with a (dis) assembly video from Youtube. If it is useful.

English is called the part

Hinge cover

So you could googln like this

Hinge Cover Replace and laptop model

(Lord of notebooks, always keep the notebook safe. How cool is that?)

I only know such parts from the inside of a touchpad. A kind of spacer.

Why is something attached to the outside of a notebook?

(I'm a technician.) Doesn't make sense to me. Can you explain that?

No idea - it just looks like a cover for me - but you also have to get it in somehow

https://www.ebay.de/...2788004640

LCD Screen Hinge Cover Case -Asus A555L
e.g…

like there e.g.

I almost wanted to write something that has to do with the first word of the rings.

No. Ok maybe I even know better than you. I thought there was a technical reason to make it externally accessible. But I don't see any sockets in the photo where you can connect anything.

For installation, only the smooth side outside. Then try right, left. Technically unimportant. But there shouldn't be any dust in the housing.