Missing the Global Styles Panel?

Hi,

I am a little confused on how to edit the global styles to the theme, but I am a student and new to WP. I’ve looked through this forum, and looked for the WP 5.9+ Global Styles Panel in the Site editor (as shown in this post from Sept 2021: https://wptavern.com/tove-a-block-based-wordpress-theme-by-anders-noren) but that panel (the Aa tab) doesn’t exist in my site editor?

You can see a screen shot of my site editor panel here: https://imgur.com/a/V5v6at0

Any help would be greatly appreciated!