Youtube Comment Likes to get into top comments

In the past I bought Youtube Comment Likes to boost my comment into the TOP COMMENTS.
It always worked. The Likes came within minutes and my post appeared very high (mostly in the TOP 5 comments). Now when I buy the comment likes, youtube doesnt bring them up anymore.

Do you know iof Youtube Changed its algorhythm?
How can they detect if its unusual activity/bot likes or natural likes?


I am trying to fix this so I can work like before.

You would probably need to get the slow likes. They bot your comment with a few likes every few minutes or hours. That way it seems more gradual and natural