Nginx config with wordpress in a subfolder and alias

[admin]

I have a pretty weird nginx setup. I need the following setup:

<ul>
<li>url "/" -> static html files in /srv/www/landing-pages</li>
<li>url "/tr_tr/blog/*" -> wordpress installation in /srv/www/domain.com</li>
<li>url "/en_us/blog/*" -> wordpress installation in /srv/www/domain.com</li>
</ul>

The wordpress configuration is like

<ul>
<li>currently the wordpress installation is configured to answer to domain.com. </li>
<li>the whole /tr_tr/blog structure is constructed with wpml multi language plugin. </li>
<li>two wordpress pages are created with "/blog" slug and are prefixed with locales by the wpml plugin. </li>
<li>Blog post permalinks are set to /blog/%postname%-%post_id%/ Those permalinks are prefixed with locales by wpml automatically too.</li>
</ul>

My nginx configuration is

server {
    server_name www.domain.com;
    return 301 $scheme://domain.com$request_uri;
}

server {
    listen 80;
    listen [::]:80;

    server_name domain.com;
    return 301 https://$server_name$request_uri;
}

server {
    listen   443 ssl;
    server_name domain.com;

    gzip on;
    gzip_proxied any;
    gzip_types
        text/plain
        text/xml
        text/css
        image/svg+xml
        application/json
        application/javascript
        application/x-javascript;
    gzip_vary on;
    gzip_disable “MSIE [1-6]\.(?!.*SV1)”;

    expires $expires;

    ssl_certificate /etc/nginx/ssl/fullchain.pem;
    ssl_certificate_key /etc/nginx/ssl/privkey.pem;

    server_tokens off;

#    include /etc/nginx/nginx-wp-common.conf;

location / {
  root /srv/www/landing-pages;
  index index.html index.htm;
  try_files $uri $uri/ /$uri;
}

location /tr_tr/blog {
  alias /srv/www/domain.com/;
  index index.php;
  try_files $uri $uri/ /index.php?$args =404;

  location ~ \/tr_tr\/blog\/.*\.php$ {
    try_files $uri =404;
    include /etc/nginx/fastcgi_params;
    fastcgi_read_timeout 3600s;
    fastcgi_param SCRIPT_FILENAME /srv/www/domain.com/$fastcgi_script_name;
    fastcgi_pass unix:/run/php/php7.2-fpm.sock;
    fastcgi_split_path_info ^(.+\.php)(/.+)$;
    fastcgi_index index.php;
  }

 }
}

I added only tr_tr location during development. Currently I'm getting 404's 403's "No input file specified's" for blog urls.

Root urls are fine, I can open my dummy html files in srv/www/landing-pages folder from domain.com/test.html

The idea is,

<ul>
<li>all urls should follow /{locale}/{project} template. </li>
<li>corporate landing pages will be served from landing-pages folder (gatsbyjs)</li>
<li>Company blog is served from /{locale}/blog urls</li>
<li>I dont want to create two seperate wp installations for both countries.</li>
</ul>

How can I setup this configuration in nginx?