Unable to answer "What kind of parking is this?" for way/1058626200 via StreetComplete 43.2:

Das ist kein Parkplatz, sonden eine Halteverbotszone in einer Wendeschleife

Unable to answer "Who accepts donations for this clothing bin?" for node/7653954060 via StreetComplete 41.2:

Keine Angaben zum Inhaber gefunden

Attached photo(s):
https://westnordost.de/p/86529.jpg

Just wondering:
"BMX Bane" with bicycle=no foot=yes and sitewalk=none? Confusing to me but may be local regulations.

Unable to answer "How are the footway and cycleway laid out here?" for way/28175304 via StreetComplete 32.2:

Schild weist ihn in beide Richtungen als reinen Radweg aus

Attached photo(s):
https://westnordost.de/p/47408.jpg

Unable to answer "Is this playground publicly accessible?" for way/465653860 via StreetComplete 32.2:

existiert nicht mehr

Unable to answer "Is it restricted who may park here?" for way/433242894 via StreetComplete 32.1:

nördlicher Parkstreifen ist öffentlich, südliche zwei sind private

check boundary relation here, where is the Killarney National Park

Spielgruppe laut Webseite an anderer Adresse: Altlandenbergstrasse 4 - Umgezogen?

What kind of device is generating power at this place?

Someone with local knowledge should check the mapping of Hagaparken.
Two different ways cover different areas and one of them looks strange and full of self-intersections. Some separate tacked wooden areas also named Hagaparken.