Train the filter with keyboard shortcuts? Upvote/Downvote via keyboard?

I am trying to filter out a lot of storys via keyboard shortcuts.
I can press “T” to start trainings for this story, then TAB to go to the text fielt, jump to the words with ALT+Arrow and select with shift+ALT+arrow. Then I can press Enter and the filter is added. BUT I neet to filter OUT a word - is there a shortcut to change the filter to negative (filter out) on macOS? I cant go to the selection “thumbs up / down” via TAB key… Any option?

So there is no keyboard shortcut in a browser window of macos to upvote or downvote?

Anyone? Or is it maybe possible to set “downvote” as the standard setting?