Sounds like the Rotel is the likely offender. So, I won’t comment on that.
On the speakers. If you are not hearing a big difference… well, that is a problem. Dynaudio are very good speakers. So what is the difference in cost? Need more info here.
I always try to make sure every change is an upgrade. That usually means spending a minimum of 2x. But on speakers you also want to be drawn to the sound. You might consider returning them and backing off and review speaker companies. They tend to have house sounds… so if you are emotionally attracted to one set of speakers moving up or down their lines brings you better or not as good a sound of the same character. If the Focals are 2x and you don’t hear a real sound improvement, move on.
Sounds like you need to replace your amp. Given the high quality brand you have, maybe this should be the first step. Typically it is speakers first… but it sounds like a better preamp / amp might be a better first step for you.
These are wild guesses. It would be helpful to us if you could put some photos of your system and venue under your ID… virtual system. There are so many variables… it is tremendously helpful to see the actual system.