@TeamYouTube why does the YouTube algorithm only show me videos from either 1 year or within the past couple days. I don’t see anything from like 3-4 months ago. (From the YouTube home page).
We'd like to help. Have you tried signing out and signing back into your account? Also, try clicking 'Not Interested' from the 3-dotted menu on the videos which you've already watched or you don't like. It would influence how YT suggests videos in the future. Hope this helps.