Recently I was browsing the settings of my Lineage 19 Fairphone, and found a few helpful settings to make my and maybe also your life easier. These apply equally to Android 12 and may differ in later versions.
The first is Gesture Navigation. I first experienced this on Apple devices and I was totally confused. Rather than the three buttons back, home, app switcher at the bottom, you have a little bar reminding you to use gestures. After looking them up and experimenting a while, I found them a lot more handy than the buttons, as I have more screen space but also more potential interactions with the gestures. A feature which is not immediately obvious but I enjoy most now is the ability to swipe up slightly and then sideways to switch back and forth between apps, something I do very often. Now I just need to find out why apps like Firefox and OsmAnd keep reloading upon switching.
The second feature are System Profiles. With System Profiles, you can use triggers like Wifi, Bluetooth and NFC to change most system settings. So I set it up to adjust my configuration and most importantly disable screen lock when I am connected to the car via bluetooth.
The third is less shiny - I wanted my buttons back to turn Wifi and Mobile Data off and on with one click. The new combined "Internet" widget is too clunky for me. So I rearranged the quick tiles and in the process found more curious features available as quick access now, including native screen recording. And I promoted Coffee, the app which keeps my screen on, for example when using it for piano sheet music.