So after a couple of days of searching and testing I have found something that half works for Nginx with a Baikal server. Below is the code that I currently have:

set $controller /public/index.php;

location /public {
root /var/www/html/agendav/web/;
index index.php;
try_files $uri $uri/ $controller;

  location ~ ^(?<script>.*\.php)(?<pathinfo>.*)$ {
	      try_files $script $controller;
  
      include /etc/nginx/fastcgi_params;
      fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
      fastcgi_param PATH_INFO $pathinfo;
      fastcgi_pass unix:/run/php/php7.4-fpm.sock;
      fastcgi_param   APPLICATION_ENV  dev;
  }

}

This seems to allow me to get into the app and hook up with my Baikal server. But, now I am unable to show the events of my calendars. I am so close to getting it up and running and yet it feels so far. I have seen that the problem has been resolved with changing the config file to be slightly different. The link provided before was, http://silex.sensiolabs.org/doc/master/web_servers.html#nginx but that no longer exists. If anybody has solved the problem, it would be much appreciated if you could share your fix.

Thanks in advance for your help!