RSS Feed – Change featured icon

Howdy you all,

I try to figure out what mechanism is responsible for providing this image when generating my my RSS Feed. This code snippet is part of the RSS Feed.

<image>
	<url>https://wtp.wundertuete-podcast.de/wp-content/uploads/2018/11/cropped-Logo_icon-32x32.jpg</url>
	<title>Die Wundertüte – Die Wundertüte – Der Podcast aus der Küche</title>
	<link>https://wtp.wundertuete-podcast.de</link>
	<width>32</width>
	<height>32</height>
</image> 

… because I want to use a different image than cropped-Logo_icon-32×32.jpg in a higher resolution. In the appropriate upload folder I can see that WordPress is providing that same image in different resolutions but cannot figure out why the Feed-Generator in WordPress always uses the image with the smallest resolution.

And help is much appreciated.

Warm regards…

offworldnl