difficulty in accessing sub directories files bcz of htaccess

This is my .htaccess code

<IfModule mod_rewrite.c>
    RewriteEngine On

    RewriteCond %{REQUEST_FILENAME} !-d
    RewriteCond %{REQUEST_FILENAME} !-s
    RewriteRule ^(.*)$ api.php?rquest=$1 [QSA,NC,L]

    RewriteCond %{REQUEST_FILENAME} -d
    RewriteRule ^(.*)$ api.php [QSA,NC,L]

    RewriteCond %{REQUEST_FILENAME} -s
    RewriteRule ^(.*)$ api.php [QSA,NC,L]

    RewriteCond %{REQUEST_URI} !^/images/   

</IfModule>

My directory structure:

My problem is that I can acces my api.php by calling /users or /getData etc. But if I go for images/someImage.jpg then it not allowing.