Hi,
Where is the excerpt? If is is on the archive:
Please go to Appearance > Theme Editor, edit template/archive/loop-item-standard.php
Find:
<?php if(has_excerpt()){ echo '<div class="arvhive-excerpt">'. wp_trim_words(get_the_excerpt(), 20, '...').'</div>' ;} ?>
update as:
<?php if(has_excerpt()){ echo '<div class="arvhive-excerpt">'. wp_trim_words(get_the_excerpt(), 40, '...').'</div>' ;} ?>

If it is not, please leave the page(with excerpt) URL, thanks

Best

Hi,

Thanks for the screenshot.
Please go to Appearance > Theme Editor, edit template/page/blog-masonry, find line 42：
<?php if(has_excerpt()){ echo '<div class="gird-blog-excerpt">'. wp_trim_words(get_the_excerpt(), 20, '...').'</div>' ;} ?>
The number 20 is about words number, you could adjust it.

Best