Hi, I’m looking to set up a couple widgets on a new Note 12, but I don’t seem to be having any success and have started going around in circles.

1. On my old android the clock app allowed me to display many different timezones on the home screen, but I can’t find anything more than dual. Is this possible?
2. After activating the dual I wanted to go back to the old widget instead (single time and weather on the right) so removed it from the home screen. I now cannot get either widget back. The one with the weather doesn’t show in widgets, and the dual option under clocks has a solid white background that looks awful. The dual does however still show on the lock screen. I’ve tried switching it off and on but no luck. I presume it needs ‘system clock’ widget but I can’t see this anywhere.
3. I assume there are certain apps I can’t remove/hide from the home screen? Mi Browser for example?

Edit: This might have something to do with my widget menu as it seems to have changed and doesn’t have the options I had. Any way I can get this back?