Your issue is this..
You redirect http://www.securityfix.co.il to https://www.securityfix.co.il
Then you redirect https://www.securityfix.co.il to https://securityfix.co.il
You should just redirect all http traffic to https and do not redirect www to https://www then to https without the www.
redirect all http traffic to https://security....
redirect all https traffic with www prefix to https without www prefix...
So you should have two conditions and one rule ...
The following code solves your issue ( oh and I prefer not to use WWW in a url.. superfluous in my opinion )
Here it is for a linux server
(this test for https not on, and it also test for www in url and if either condition is true it redirects to the correct url in one redirect no two redirects like you have on your site.
RewriteCond %{HTTPS} !on [OR]
RewriteCond %{HTTP_HOST} ^www\.
RewriteRule (.*) https://securityfix.co.il%{REQUEST_URI} [L,R=301]