Latest update cannot be installed

Yesterday I received an update for my website (http://www.sustainabilitytips.com) for the Google Analytics by Yoast plugin. I tried to manually update the plugin but the message i got was:

Downloading update from https://downloads.wp.xz.cn/plugin/google-analytics-for-wordpress.5.1.2.zip…
Unpacking the update…
Installing the latest version…
Removing the old version of the plugin…
Could not remove the old plugin.
Plugin update failed.
Return to Plugins page

Therefore I tried to deactivate and uninstall the current version in order to download the new one. But it seems I cannot delete the current plugin.

What should I do?

Thanks a lot in advance for your help!

https://ww.wp.xz.cn/plugins/google-analytics-for-wordpress/