Domain and URL Filtering failures

So I have attempted multiple modes of filtering to block specific domains: various adult websites, various social websites, etc. However, each method I have attempted to deploy has failed. My two most recent failures were using the Web Proxy method and Content method, however I could still access the sites after enabling either of the filtering methods.

I have looked up several videos and looked at many threads in this forum, but none seem to fix my current issue.

The Content Method I used:

add action=drop chain=forward comment="BLOCK : Facebook " content=facebook disabled=yes dst-port=80 protocol=tcp
add action=drop chain=forward content=facebook disabled=yes dst-port=8080 protocol=tcp

I have tried with both facebook and facebook in the content field. I can still access the site.

The web proxy method I used:

/ip proxy
set cache-on-disk=yes enabled=yes
/ip proxy access
add action=deny comment=Social dst-host=*facebook*
/ip filter nat
add action=redirect chain=dstnat dst-port=80 protocol=tcp to-ports=8080

**I recently updated to 6.40.1

HTTPS so port 443. Content filtering on encrypted traffic is difficult. Then Facebook has many names and there be hundreds op postings in this forum only about this specific subject.

I suppose you selectively ignored the many threads that tell you that this is no longer really possible, and focused
on the old threads that report success?
It used to be easy. But then everyone (including facebook) went to https (= encryption). And now, it is not so easy anymore.

Ah yes. All the posts and videos seem to be dated. Well, that makes things more difficult.