The photo issues seem to already be addressed; as for the slump, most of us can completely identify. It happens. I was in one pretty much all last month, maybe the end of March too. Usually, when I get in slumps, I have a variety of things I do that often help me "snap out of it." This time, nothing worked and I finally just had to put the camera down for about two weeks or so.
Then I got an awesome new lens. That took care of the slump.

But I really hope the next slump doesn't require a $1K chunk of glass as a remedy. :lmao:
Some of the things that *normally* work for me:
--Just putting the camera down for a day or two. Still LOOK for the shots, but don't take any.
--Take pictures of something you don't usually do. If you're mostly into portraits, do some landscapes...or water drops...or abstracts. If you do a lot of nature stuff, try something else that is completely "out of the box" for you. Doesn't really matter if it's good, bad, or so-so, just makes you THINK differently.
--Use a different lens. I shoot 99% of the time with either my 70-300 (well, NOW, with my 150-500) or my 100mm macro. But if I'm in a funk, I might put the 50mm on or the 18-55 kit lens and shoot just with that lens for a day or two. Find anything I can and make it as interesting as I can, just using that one lens.
--Do one of those "10 Things within 10 feet" type challenges. Or shoot only green things, or red things.
ALL of that is about getting out of my "normal" way of thinking about photography. That usually helps me to come back with a fresh view when I do my "normal" stuff again.