Upon reviewing what it means to have a Mallsai I see where you are coming from. My tree is, in fact, a Bonsai but was sold as a Mallsai.
No, your tree was sold as a bonsai, but it is not.
Bonsai is the art of creating a miniaturized, but realistic impression of a tree in nature.
A mallsai is a cheap, mass-produced version of it, looking like a bonsai, but with low quality and low artistic value.
Your tree is neither, it is a houseplant, made to mimic a bonsai. It does not look like a real tree. The monstrous roots are out of proportion. The top is cut off and new foliage from another ficus species is grafted on top of it.
I had re-potted it and am bringing it into a true state of a Bonsai.
This will be very challenging and nearly impossible, especially for a beginner. You will hardly be able to make the roots look acceptable. You will hardly be able to get rid of the ugly scar where the plant is grafted. It will be easier to start with an ordinary ficus - or even a cheap ficus mallsai from a garden center (I have found some that are actually not too bad - not that I have them, I cannot grow them outdoors and do not do indoor bonsai).
But to say that the species of Ficus are not Bonsai is wrong I believe.
I think you got that wrong. Bonsai is NOT a tree species, it is an art, using techniques to miniaturize trees. Ficus is suitable for bonsai, but your Ficus is not good starter material.
My info was found at this source:
www.instructables.com/id/Bonsai-Basics-1-Rescuing-Mallsai/
That's not really a website about bonsai... but also the tree is very different from yours - it is not the typical fat root Ginseng.
Yes, there are people that try and make bonsai out of these plants, but these are rare, the guys doing it are experienced bonsai growers, and still, the results are not really that great.