How to search YouTube (or via search engine like Google to reach YouTube) keywords, filtered by - most popular, in (x) years/months?
From Youtube First type your keywords and click search. After getting the results of your search, you can then sort by clicking the filter options and selecting options related to dates, sort by "View count" for popularity.
You can also use the
after keywords to restrict the range of search. For example, to search from videos from February 2020, type:
From Google Search
Type your keyboard followed by
site:youtube.com to restrict the search to only youtube. You can then click on Tools to display more options. You can customize the date range and the duration. The begore and after options also work with Google Search.