Hi. I have read all documents about image size and related to that. I still can do nothing with my image sizes. I made all images the same size, uploaded all images again, regenerated all thumbnails. Nothing. No cache. No browser cache.

For example, this post https://otea.net/best-and-most-useful-teas-for-immunity-boosting
In the post there are a few images + featured image (I turned it off). In block editor I set the images size as 600×450 but it doesn’t display this size on the screen. I see all the images much lager. Also I tried to reduce image size in post template. The same. Nothing work.

Please, help me find the way how I can control image size. Thanks