@akiheavenly6

The only tip is to visit off season, really. And I mean only in April and late October. I've seen so many videos giving tips like don't stay in Oia during sunset, go here instead to avoid crowds. But if you're not in Oia at sunset then you might aswell not come to Santorini! The whole attraction of Santorini is Oia, and nothing else! You don't come to Santorini to see Megalochori, let's be honest here. It's a quaint little town. but you can go to Paros for cheap to see a quaint little white town.
A much better tip of making your visit in Santorini worth while is to book a hotel with a caldera view! There are 10 affordable options if you book 6 months ahead. You then can buy your own alcohol from the supermarket and have food delivered to your room. This way you can enjoy the sunset view every single day from your jacuzzi or private balcony. No hassle of getting reservations for overpriced and mediocre restaurants, or fighting for a viewing spot among the pushy crowds.