Google Analytics – To filter your IP from GA logs you must not anonymize your IP in your ga() or gtag() call - filter out your IP with GDPR compliance: X https://www.damiencarbery.com/2019/03/google-analytics-filter-out-your-ip-with-gdpr-compliance/

google-analytics-with-anonymize.php

<?php
/*
Plugin Name: Google Analytics with anonymize
Plugin URI: https://www.damiencarbery.com/
Description: Anonymize all visitor IPs except IPs or IP ranges in a set list.
Author: Damien Carbery
Author URI: https://www.damiencarbery.com
Version: 0.1
*/


add_action( 'wp_head', 'gaa_add_ga_tags_with_anonymize' );
function gaa_add_ga_tags_with_anonymize() {
	$ga_tracking_id = 'UA-1234567-1';
	// Can exclude IPs or a range.
	$excluded_ips = array( '123.231.45.112', '132.211.55.' );
	
	$anonymize_ip = true;
	$gtag_config = sprintf( "gtag('config', '%s', { 'anonymize_ip': true });", $ga_tracking_id );
	foreach ( $excluded_ips as $ip ) {
		$strpos = strpos( $_SERVER['REMOTE_ADDR'], $ip );
		//printf( '<!-- %s - %s = %s -->%s', $_SERVER['REMOTE_ADDR'], $ip, var_export( $strpos, true ), "\n" );
		if ( 0 === strpos( $_SERVER['REMOTE_ADDR'], $ip ) ) {
			$anonymize_ip = false;
			$gtag_config = sprintf( "gtag('config', '%s');", $ga_tracking_id );
			break;
		}
	}
?>
<script async src="https://www.googletagmanager.com/gtag/js?id=<?php echo $ga_tracking_id; ?>"></script>
<script>
	window.dataLayer = window.dataLayer || [];
	function gtag(){dataLayer.push(arguments);}
	gtag('js', new Date());
	<?php echo $gtag_config; ?>
</script>
<?php
}

with-anonymize.js

gtag('config', 'UA-1234567-1', { 'anonymize_ip': true });

without-anonymize.js

gtag('config', 'UA-1234567-1');