I just noticed that your tank is a 30 cm/12 inch cube. My shrimp tank is the same size. With a 30 x 30 footprint, there won't be room for many plants.
In mine I have 2 pieces of wood, one long and thin standing on its end and covered in java moss; the other is smaller and roughly dome shaped and has anubias bonsai attached. I have a plant called Schismatoglottis preitori planted in the substrate - it arrived as a clump of small plants so I separated them and left a small space between each plant. I'm hoping that eventually they grow in to one big mass. And there's frogbit on the surface.
If you want anubias, you need to chose one of the smaller species. I've had anubias plants in the past that would fill my entire 30 cm cube by themselves.
Wisteria ticks all the boxes - an easy to grow, low light plant. But it grows up to 30 cm tall and may take over your tank. I've not grown this plant myself, but other members have and they'll be able to tell you if it will grow too big for a 30 cm/12 inch cube.
The website Tropica has some ideas for different layouts. This one is tanks with easy plants and under 50 litres
https/tropica.com/en/inspiration/?mode=search&dif=Easy&size=small&sizename=< 50L &aquarium= Most of these tanks are rectangular with a larger footprint than our tanks, but it will give you some ideas of what the experts can do.