Unable to answer "What’s the surface here?" – Foot Path – way/215436631 via StreetComplete 58.2:

There is no way and also no entrance at this location where a way could lead to (like the one in the north)

Unable to answer "Do the trees here have needles or leaves?" – Natural Wood – way/284169348 via StreetComplete 58.2:

There is no forest here, only industrial area

I'm not quite sure if this is supposed to be a barrier for two track motor vehicles.

The block is 15 cm high and I would definitely have concerns driving over it with a normal car

via StreetComplete 58.2

Attached photo(s):
https://westnordost.de/p/230967.jpg

Barrier with a chain

via StreetComplete 58.2

Here is a beach for swimming

via StreetComplete 58.2

Barrier with a chain and a sign saying that the area is private property. So everything inside should also be mapped with access=private

via StreetComplete 58.2

This and also the entrance on the east side of this block is blocked by a gate.
"Propriete privee" is written on the gates.
Maybe also mark the road or the whole block as private?

this parking place is closed. there are big concrete barriers across the side to the road and pedestrian forbidden signs 🚷.
the viewpoint is not accessible without climbing over the barrier and ignoring the signs.
I would recommend deleting both the parking place and the viewpoint. Or at least adding the barrier also to the parking street as nodes and tagging the parking place with access=no

Two barriers on both sides of the footway. Foot and bicycle yes

via StreetComplete 56.1

Attached photo(s):
https://westnordost.de/p/201075.jpg