Alguém me dá uma mão com uma expressão regular?

$texto = preg_replace( '/<blockquote class="twitter-tweet"[^>]*>.*\n*.*twitter.com\/\w*\/status\/(\d*)".*<\/blockquote>/', '<amp-twitter width=375 height=472 layout="responsive" data-tweetid="$1"></amp-twitter>', $texto );

 <?php echo '<p>Hola Mundo</p>'; ?>
porque no pones directamente cual es la duda aqui?

<?='let me google it for you'?>
// O en su defecto en español
<?='deja lo busco en google por ti'?>

esto

$texto = preg_replace( '/<blockquote class="twitter-tweet"[^>]*>.*\n*.*twitter.com\/\w*\/status\/(\d*)".*<\/blockquote>/', '<amp-twitter width=375 height=472 layout="responsive" data-tweetid="$1"></amp-twitter>', $texto );

<blockquote class="twitter-tweet"><p dir="ltr" lang="es">? Los convocados para el <a href="https://twitter.com/hashtag/Bar%C3%A7aGetafe?src=hash&amp;ref_src=twsrc%5Etfw">#Bar&ccedil;aGetafe</a> <a href="https://t.co/Sat0UYvjAT">pic.twitter.com/Sat0UYvjAT</a></p>
&mdash; FC Barcelona (@FCBarcelona_es) <a href="https://twitter.com/FCBarcelona_es/status/1431556107651141633?ref_src=twsrc%5Etfw">August 28, 2021</a></blockquote>

<amp-twitter width=375 height=472 layout="responsive" data-tweetid="1431556107651141633"></amp-twitter>

<?php
$href = "https://twitter.com/ArianaGrande/status/1322025587368742912";
$matches = [];
if (preg_match('&(*UTF8)twitter.com/.*/status(?:es)?/([^/]+)&i', $href, $matches)) {
    if (!empty($matches[1])) {
        $tweet_id = $matches[1];
    }
}   

echo "<amp-twitter height = '223' width='486'  layout=\"responsive\" data-tweetid=\"$tweet_id\"></amp-twitter>";
?>