RewriteEngine On
RewriteCond %{REQUEST_URI} !^/public/
 RewriteCond %{REQUEST_FILENAME} !-d
RewriteCond %{REQUEST_FILENAME} !-f
RewriteRule ^(.*)$ /public/$1
#RewriteRule ^ index.php [L]
RewriteRule ^(/)?$ public/index.php [L]

htaccess böyle düzeltin bakalım. panel plesk mi

https://www.devopsschool.com/blog/laravel-remove-public-from-url-using-htaccess/