Exhaust issues

[9mmPreacher]

So the nut and bolt fell off my frame that my muffler was attached to, no problem I will get a new bolt ASAP but I noticed something. The muffler was hanging pretty low as if it was slightly bent and I was having issues with the exhaust almost like it wasn't pushing out through the muffler enough causing issues in the smoothness of the ride. (it would be jumpy as I accelerated).

I am trying to find any cracks in the exhaust, I can't see anything as of now however I can't take the heat shield off because the bolts are pretty rusted so that's another issue.

When I push the muffler up against the frame I don't get the low rumble like when the muffler was bent down. I am really unsure of what to do at this point. I will take any advice I can get.

Thanks guys,
Preacher