The internet makes countless resources available to us, there is no excuse for ignorance anymore. Choose one topic that interests you and learn everything you can about it today. Explore perspectives you agree with as well as those you don't. Become truly well-rounded in understanding the topic. If you learned about one specific thing every week, you'd know 52 new subjects at the end of a year! That would make you a relative genius.
How can you learn about things you don't know anything about? Youtube is a starting point, but definitely not the best or only source. Documentaries (youtube, amazon prime video, netflix, hoopla), wikipedia, websites, blogs, books, ebooks, free pdfs, audiobooks (hoopla is free if you have a library membership and audible may still have free content due to corona), Khan academy and other sites offering free classes... there is no limit except those we place upon ourselves. While everyone else is dumbing themselves down (especially after watching the Tiger King lol) level up by expanding your knowledge.