2001 Ford escort drive belt tensioner wobbles it makes noise seems to be working okay is there a problem

What is your question?

The drive belt picture how do I 2001 Ford escort makes noise as it wobbles back and forth it works okay but there is a lot of noise from it going back and forth can I tighten it? How?

What makes this problem better or worse?

It's fairly consistent

How long has your 2001 Ford Escort had this problem?

Girlfriend just got car