I've only caught 7, all this year. I went out recently to a spot where I've hooked a couple.
Same story, lots of fish moving about. Some were eating, but not 'gorging' or actively mudding with their snouts, where it is easy to get them to eat whatever is in front of them.
Carp were chasing each other around doing their spawn thing. I tried to cast to those that appeared to be slow cruising and eating by themself, but no luck. Lots of denials. I did get to cast a few times at a ~40"+ monster though, landed the fly on his head and he took off leaving a wake like a small boat!
Went back to another pond where the water is still cooler, no spawn yet, and I caught a carp within 1/2 hour of being there...
it seems carp is all about timing
Good luck out there, Even a missed hook up is a thrill when they bolt in a swirl of silt. Look up Mr. P's videos, they discuss nuance that will help catch carp. The telegraphed body motion of the take is SOOOOOOO
subtle. (bold and italic for emphasis...