How should you interpret changes in TVL? Take the Optimism Bridge at $OP as an example:
7-day TVL fell from $852 million to $590 million (-30.81%).
I usually check two things: first, whether this change continues for several days, since a sudden jump over a day or two is often caused by a one-off deposit or withdrawal by a few whales; second, whether protocol revenue and user numbers are also declining.

#OP

I can be wrong too, so don't take this as advice.