nginx vhost disable all access to the following directories not working

Hi

I added below codes to disable all access to the following directories, but somehow it is not working. Anything wrong with the codes?
/etc/nginx/sites-enabled

## disable all access to the following directories
location ~ ^/(config|tmp|core|lang) {
deny all;
return 403; # replace with 404 to not show these directories exist
}

Full codes for vhost in /etc/nginx/sites-enabled
-----------------------------------------
server {
listen *:80;
listen [::]:80;
listen *:443 ssl http2;
ssl_protocols TLSv1.2;
listen [::]:443 ssl http2;


server_name xxx.com ;

add_header Referrer-Policy origin always; # make sure outgoing links don't show the URL to the Matomo instance
add_header X-Content-Type-Options "nosniff" always;
add_header X-XSS-Protection "1; mode=block" always;
root /var/www/xxx.com/web/;
disable_symlinks if_not_owner from=$document_root;


index index.html index.htm index.php index.cgi index.pl index.xhtml;



error_page 400 /error/400.html;
error_page 401 /error/401.html;
error_page 403 /error/403.html;
error_page 404 /error/404.html;
error_page 405 /error/405.html;
error_page 500 /error/500.html;
error_page 502 /error/502.html;
error_page 503 /error/503.html;
recursive_error_pages on;
location = /error/400.html {

internal;
}
location = /error/401.html {

internal;
}
location = /error/403.html {

internal;
}
location = /error/404.html {

internal;
}
location = /error/405.html {

internal;
}
location = /error/500.html {

internal;
}
location = /error/502.html {

internal;
}
location = /error/503.html {

internal;
}

error_log /var/log/ispconfig/httpd/xxx.com/error.log;
access_log /var/log/ispconfig/httpd/xxx.com/access.log combined;

location ~ /\. {
deny all;
}

location ^~ /.well-known/acme-challenge/ {
access_log off;
log_not_found off;
auth_basic off;
root /usr/local/ispconfig/interface/acme/;
autoindex off;
index index.html;
try_files $uri $uri/ =404;
}

location = /favicon.ico {
log_not_found off;
access_log off;
expires max;
add_header Cache-Control "public, must-revalidate, proxy-revalidate";
}

location = /robots.txt {
allow all;
log_not_found off;
access_log off;
}

location /stats/ {

index index.html index.php;
auth_basic "Members Only";
auth_basic_user_file /var/www/clients/client0/web36/web//stats/.htpasswd_stats;
add_header Content-Security-Policy "default-src * 'self' 'unsafe-inline' 'unsafe-eval' data:;";
}

location ^~ /awstats-icon {
alias /usr/share/awstats/icon;
}

location ~ \.php$ {
try_files /d8d42ac3e07b8aeac13a317608cafcd4.htm @php;
}

location @php {
try_files $uri =404;
include /etc/nginx/fastcgi_params;
fastcgi_pass unix:/var/lib/php7.2-fpm/web36.sock;
fastcgi_index index.php;
fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
fastcgi_intercept_errors on;
}



## disable all access to the following directories
location ~ ^/(config|tmp|core|lang) {
deny all;
return 403; # replace with 404 to not show these directories exist
}



## deny access to all other .php files
location ~* ^.+\.php$ {
deny all;
return 403;
}



## deny access to all other .php files
location ~* ^.+\.php$ {
deny all;
return 403;
}

## serve all other files normally
location / {
try_files $uri $uri/ =404;
}



location ~ /\.ht {
deny all;
return 403;
}

location ~ js/container_.*_preview\.js$ {
expires off;
add_header Cache-Control 'private, no-cache, no-store';
}

location ~ \.(gif|ico|jpg|png|svg|js|css|htm|html|mp3|mp4|wav|ogg|avi|ttf|eot|woff|woff2)$ {
allow all;
## Cache images,CSS,JS and webfonts for an hour
## Increasing the duration may improve the load-time, but may cause old files to show after an Matomo upgrade
expires 1h;
add_header Pragma public;
add_header Cache-Control "public";
}

location ~ ^/(libs|vendor|plugins|misc|node_modules) {
deny all;
return 403;
}

## properly display textfiles in root directory
location ~/(.*\.md|LEGALNOTICE|LICENSE) {
default_type text/plain;
}



}