Everywhere. You can find essences everywhere on My Sims Kingdom. You can dig or mine or shake trees and pull dandelions. You can get he emotion essences by going up to someone and clicking "Be Mean" or "Be Nice". To get the scary essence, you have to unlock Rocket Reef and hook up the ride in Vic's training place. You can also got to Spookane (also need to unlock).
In My Sims Kingdom, bubble essences can be obtained by completing various tasks and quests for the townsfolk. You can also find them by exploring different areas and interacting with objects or characters. Additionally, some bubble essences may be rewarded for achieving certain milestones or completing specific challenges in the game. Keep an eye out for special events or locations that may offer unique essences as well.
you need the 4 raindrop essences and the gold planet essences
By the Railroad.
You can get them by pulling up dandelions or from the Frogberry plats on The forest of the Elves, or by feeding or petting animals
To make a slide you need to gets 2 bubble essences.
there are no elegant essences
Angry essences are found by running on the treadmill.
In a place around that area.
You can usually find all essences when you pull up weeds. You will need patience but it should work.
go to the ski lift and use the extracator
to get the rocket essences go to rocket reef and shake trees that have rocket essences.
you dig for them & mine them
at Forest of Elves at the pther end of the island
I love the Sims kingdom too and all you have to do is follow what you have to do in your missions
you need the 4 raindrop essences and the gold planet essences
By the Railroad.
You need the bubble essence