Gzip Compression and leverage Browser Cache Not working for my store

I am trying to optimize my store, I have added Gzip Code and Leverage Browser Cache Code in my .htaccess File:

# Leverage browser caching using mod_expires #
<IfModule mod_expires.c>
    ExpiresActive On
    ExpiresByType image/jpg "access plus 1 year"
    ExpiresByType image/jpeg "access plus 1 year"
    ExpiresByType image/gif "access plus 1 year"
    ExpiresByType image/png "access plus 1 year"
    ExpiresByType text/css "access plus 1 month"
    ExpiresByType application/pdf "access plus 1 month"
    ExpiresByType text/x-javascript "access plus 1 month"
    ExpiresByType application/x-shockwave-flash "access plus 1 month"
    ExpiresByType image/x-icon "access plus 1 year"
    ExpiresDefault "access plus 2 days"
</IfModule>
# End of Leverage browser caching using mod_expires #

# Leverage browser caching using mod_headers #
<IfModule mod_headers.c>
    <FilesMatch "\.(ico|pdf|flv|jpg|jpeg|png|gif|js|css|swf)$">
        Header set Expires "Wed, 15 Apr 2020 20:00:00 GMT"
        Header set Cache-Control "public"
    </FilesMatch>
</IfModule>
# End of Leverage browser caching using mod_headers #