This smaller true bug was resting on Dame’s rockets. It is Closterotomus trivialis (det. GerardL), a very rare species! [2]
She occurs in southern parts of Europe and is an introduced species here in the Netherlands, where it was first observed in 1998 (source: Nederlands soortenregister) [1].
A rather nice find.
UPDATE 2022/04/15
The rarity of the species has been changed to uncommon [2].
Literature
1 Nederlands Soortenregister2 Waarneming.nl