@SmokeTM - the issue isn't file permissions but the fact your laravel application is accessible within your webserver. Only the public folder should be accessible and should be the document root. You have apache configured somewhere to have a document root of /var/www/html/ but your application public folder is in /var/www/html/CryptoNews/public

The steps I would take to resolve are

Remove apache completely using yum remove -y httdp
Delete any apache config rm -rf /etc/httpd/*
Reinstall apache yum install -y httpd
Remove any default virtual hosts from /etc/httpd/conf.d
Restart httpd

This will remove anything that has been changed from default and get back to a known good state. At this point you should not be able access anything through your webserver.

Now if you save the below in /etc/httpd/conf.d/cryptonews.conf (I have tailored to your setup so should be a copy and paste)

<VirtualHost *:80>

  DocumentRoot "/var/www/html/CryptoNews/public"
  ServerName www.cnews.at
  ServerAlias cnews.at

  <Directory "/var/www/html/CryptoNews/public">

    Options Indexes FollowSymLinks MultiViews
    AllowOverride All
    Require all granted

    RewriteEngine On
    RewriteBase /
    RewriteRule ^index\.html$ - [L]
    RewriteCond %{REQUEST_FILENAME} !-f
    RewriteCond %{REQUEST_FILENAME} !-d
    RewriteRule . /index.html [L]

  </Directory>
</VirtualHost>

Now restart httpd and test if you can get to you application homepage at http://www.cnews.at (It will probably show 500 as your .env needs your new credentials added)

You can now readd your new credentials and your application should be accessible. Just remember to add a separate MySQL user using below logged into Mysql on the command line as you root user

GRANT ALTER, CREATE, CREATE TEMPORARY TABLES, DELETE, DROP, INDEX, INSERT, LOCK TABLES, REFERENCES, SELECT, UPDATE ON cryptonews.*
  TO 'cryptonews'@'localhost' IDENTIFIED BY 'supersecurepassword';
FLUSH PRIVELEGES;

Make sure you use a secure random password that you only use for this database. You can use https://passwordsgenerator.net/ and choose 32 chars (minimum) with the top 7 boxes ticked.

Let me know if you need any help.