Try a break of day excursion to overcome the crowds, watch faded spill over the caldera
https://sethvbhv273.brightsora.com/posts/santorini-day-tour-itinerary-a-perfect-one-day-plan-to-see-the-island-s-top-highlights
Try a first light journey to conquer the crowds, watch faded spill over the caldera, and trap serene streets prior to the island wakes up.