Provide 404 documentation with NGINX relative to the current path

server {
 listen 80;
 server_name petpal. co.il;
 root /usr/share/nginx/petpal;
 index index.php;
 location / {
 try_files $uri $uri/ @extensionless-php;< br /> }
 location @extensionless-php {
 rewrite ^(.*)$$1.php last;
 }
 location ~ \.php${
 try_files $uri /notfound;
 fastcgi_pass 127.0.0.1:9000;
 fastcgi_index index.php;
 fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
 include fastcgi_params;
 }< br />}

set $lang "";
if ($uri ~ "^/en/") {set $lang "en/"; }< br />try_files $uri /${lang}notfound;

set $lang "" ;
if ($uri ~ "^/([az][az])/)") {set $lang "$1"; }
try_files $uri /${lang}notfound; 

I have the following server blocks:

server {
 listen 80;
 server_name petpal.co.il;
 root /usr/share/nginx/petpal;
 index index.php;
 location / {
 try_files $uri $uri/ @extensionless-php ;
 }
 location @extensionless-php {
 rewrite ^(.*)$$1.php last;
 }
 location ~ \.php${
 try_files $uri /notfound;
 fastcgi_pass 127.0.0.1:9000;
 fastcgi_index index.php;
 fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
 include fastcgi_params;
 }
}

What changes do I need to make to display the 404 document according to the user’s current directory, for example, "/en/notfound" and directory "/" are displayed in the directory "/en" It will display "/notfo und"?

Maybe an if will work?

set $lang "";
if ($uri ~ "^/en/") {set $lang "en/"; }< br />try_files $uri /${lang}notfound;

Or, if you want a more general rule:

set $lang "" ;
if ($uri ~ "^/([az][az])/)") {set $lang "$1"; }
try_files $uri /${lang}notfound;