Anki keeps freezing, started after getting a new Mac

You have a bunch of add-ons there: I’d try to deactivate them, starting with legacy rememorize: most of its features are now built in the main program. The same is true for other add-ons you have.
https://faqs.ankiweb.net/when-problems-occur.html

My personal recomendation is to install only the add-ons you really need.

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