I’ve done a bunch of Hubspot courses and they are very high level. Great for beginners but don’t really go into much detail.
Semrush is somewhat more detailed, although it also doesn’t fully prepare you for everything that’s out there.

My recommendation is learningseo.io. It’s a huge list of articles, courses, templates, newsletters to follow, etc. It’s neatly organized by knowledge level and topics. And it’s free and regularly updated. Takes a while to go through but well worth it ?

And read the Google Search Central documentation if you haven’t already!