How can I move featured image to under the post title or after first paragraph

Hi, currently, the featured image is shown on the top of every post, which I do not fancy.

Is there a way (using code in additional CSS or functions.php) to move the featured image for all posts to ‘under the post title‘ or, even better, ‘after the first paragraph of the article,’ which comes under the post title?

Thank you very much.

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