By default, you will see “You May Also Like” as Heading Text for suggestion post under your single post page.

Add this code into your theme functions ( Appearance > Editor > functions.php )

Parameter *

<pre>

Line #21

echo ‘<h3 class=“related-post-title“>’ . esc_html__( ‘You May Also Like’, ‘dahztheme’ ) . ‘</h3>’;

</pre>
Replace text with your liking.