Yes
No
Google trends need to be used the other way around. Make a video based on the highly searched keywords. When you're tagging, you need to look for low competition words, but for your main subject you need something that has a high search volume (which is what google trends shows you). For example, if you look up the word Apex or Apex Game in trends, you'll see there's a massive surge in search results. Hop on that boat! Or any other new, high sought after trend, such as the new pokemon game.