Thank you for the precision: I am always eager to learn more about foreign (for me) languages.
However, I read on https://www.englishclub.com/vocabulary/cw-unlike-dislike.htm
“Remember, though, that in the real world unlike as a verb is rare today, and its use is confined mainly to social networking.”
So, in this context, “unlike” seems to be appropriate, especially considering that Facebook uses the same word for this action.
I’ll pay attention to the context when I’ll dislike something in the future