Hello @androidandreas,
Not sure how are you currently searching the plugin but here is the link to the Malcare plugin:
https://projectdmc.org/plugins/malcare-security/
Are you trying to search from the repository here: https://projectdmc.org/plugins/ or by navigating to your site WP Admin Dashboard-> Plugins
If you want to search a plugin from the repository, you can do so here: https://projectdmc.org/plugins/ and if you want to do it from WP Admin Dashboard-> Plugins, you can do so by searching in the search box by typing Malcare
I hope this helps.
Best Regards