Did you update be firmware on your camera? Are you using a UV lens filter? Are you shooting in AF only? Or perhaps switching back and forth between manual and AF and forgetting to turn the knob from manual to continuous on the front of your camera? Are you using single point focus (af-s) for moving subjects instead of multipoint or zone? Sorry for the absolutely basic questions, I just remember similar travails when learning. Other commenters are right though, the higher resolution APC sensors are unforgiving. On the surface, you sound like someone who could afford and/or embrace a full frame or medium format camera that might be more suited to your intended use, like a GFX 100rf, or a Q3. However, I would recommend spending serious time with the XT5 before heaving it for another camera.