How can I protect my privacy when using Google Classroom

Hello everyone,

As the title says, I need to use Google Classroom for a class I'm taking with my local school. I didn't get a choice in tooling unfortunately. I have in my private life cut google out, not having used Gmail in over a decade, using Youtube through invidious, OSM instead of Google Maps, etc.

I'm already planning on using either Firefox multiple account containers or a different dedicated browser for school stuff entirely. Is there any other advice you have to protect my privacy as much as possible?

I'm in the EU and I know Google is more limited in the data they can collect from educational uses, but obviously I don't trust Google.