How to create a .htaccess rule correctly?

Question

htaccess

I have a rule in the .htaccess file It sends all non
RewriteRule ^(.*)?$ material/ru.php [QSA,NC,L]
-existent pages of the type site.ru/123456 to the address material / ru.php processed a rule other than and opened the following address material/ en .php Thank you!

RewriteRule ^(.*)?$ material/ru.php [QSA,NC,L]

Answer 1

RewriteCond %{REQUEST_FILENAME} !-d
RewriteCond %{REQUEST_FILENAME} !-f
RewriteRule ^view/ material/en.php [L]

RewriteCond %{REQUEST_FILENAME} !-d
RewriteCond %{REQUEST_FILENAME} !-f
RewriteRule ^ material/ru.php [L]