Some of the larger website builders/hosting , e.g. Wix don’t even give you access to server logs.

Sure you can setup and run your own site and CMS easily enough, but running even hourly bulk log ingestion is usually not as straight forward and the information you can derive is very limited comparative to js based tracking.

Matamo ( formerly Piwik) is decent but still takes some time to setup and get right.

The main thing that the analytics tells you if you are promoting anything, is which of those promotions is actually working and driving visitors to your site.