hi
It's a ficus retusa tiger bark and if it comes from Walmart, yes, the soil is crappy.
So first of all remove the glued on gravel.
Then pot it in a good drainage soil and pot (ie. the Walmart pot are generally crappy also so a pot with enough holes to allow a nice drainage).
For the soil I use the mix recommend by Brent Watson: 8 parts perlites, 8 parts pine bark (rather fine), 1 part perlite + osmocte fertilizer 14/14/14
Then let it grow, outside if possible (speaking of which it would be nice that you complete the location part of your profile as it's important to know in which climate your tree is supposed to live).
Normally those ficus are really resistant so everything should be fine.
Something that kill them very efficiently though is the cold, I unfortunately learned that with mines this winter...