Hi,
Each time that you cut a figtree to the roots, you're back to square one. Your target is square four ...
I would give some fertilizer, regular water and let her grow.
The look of that tree means that she's not getting enough sunlight.
Since you say, that you've done some cleaning, let's see if you cleared the area enough for the tree to thrive.
I see a big trunk. What is that tree ? - Some trees will inhibit growth on other nearby trees.
Do you have another spot in your garden to move your fig-tree to that place ? Or perhaps one root shoot to see which grows faster ...