It’s not even flagship phones. Even the cheaper ones are huge. When I had to replace my LG phone (6") I went to an electronics store to see what’s on the market right now. Of all phones availiable there only were two android phones (I don’t know which brand) that were sized similarly to my LG phone. Both of them were in the 800-€-price-range.

Similar with iPhones. Almost all models exceeded the 6" screen size, except for one or two models which were in the 1000-€-price-range. They also had an iPhone SE there, that had the desired size. I bought this as a refurbished one online for a fraction of the original price.

It’s harder and harder to find a phone that has a size that either fits in your hand or that can be carried inside your pants without restricting your ability to sit down while the phone is inside the pocket.