Have you tried clearing your watch & search history as this may influence your recommendations? Here's how you can clear the search history: https://goo.gl/Sq43HM and here's your help for watchhistory: https://goo.gl/Kvmuis . Keep us posted on how this goes.
Please share your feedback directly from YouTube with these steps: https://goo.gl/WdI0BK . While every individual report may not get a direct response, we do review everything and use the details to investigate and fix issues. Thanks.