Deactivate WordPress Plugins in the frontend if they're not needed

performance.php

<?php
/*
Plugin Name: Plugin-Deactivate-Test
Version: 1.0.0
*/

// Place this file in wp-content/mu-plugins/
 

add_filter( 'option_active_plugins', 'mu_deactivate_unnecessary_plugins' );

function mu_deactivate_unnecessary_plugins( $plugin_list ) {
	if ( ! isset( $_SERVER['REQUEST_URI'] ) ) {
		return $plugin_list;
	}

	$current_url = esc_url_raw( $_SERVER['REQUEST_URI'] );

	if ( str_contains( $current_url, '/wp-admin' ) || str_contains( $current_url, '/wp-login.php' ) ) {
		return $plugin_list;
	}

	if ( str_contains( $current_url, '/' . rest_get_url_prefix() ) ) {
		return $plugin_list;
	}


	//	... (some other rules)

	unset( $plugin_list[2], $plugin_list[3], $plugin_list[4] ); // <-- deactivate a bunch of plugin of your choice for testing purposes

	return $plugin_list;
}