[quote=“Jezreel Ricafort”]
It doesnt work for my site.[/quote]
You need to find out which rule(s)/condition(s) (it may be several) break it for you, and disable them (see also comment lines for possible alternatives). To do that, start disabling (i.e. commenting out) the rules/conditions successively, and testing, until the problem disappears. Then, start successively re-enabling the ones before the problematic one, and testing, until you either re-enabled them all, or found other rule(s)/condition(s) causing problems.
For information on meaning of the RewriteRule flags (F, L, R, NC, OR, etc.), see RewriteRule Flags - Apache HTTP Server Version 2.2.