Possible concerns SEE PICS!

While I was under my van bleeding the brakes I noticed a few things would like some opinions on if there is reason to be concerned thanks . !Well gues I can only put one photo per post guess I’ll start with the exhaust pipe

this the top corner of gas tank ??

These are all those over

Not seeing an issue with 1 or 2. Need a wider shot of 3 because I have no idea what I’m looking at. Need more context for 3.

Image 1 appears to show a small exhaust leak,

Tester