Hello Saad,
What is the variety of the tree letting all figs to drop immature ??
May be the place or person where you got it from knows and help you to sort out the problem
The tree you have may also be another caprifig .. Caprifigs do let all its figs to drop as well
However an isolated caprifig does not help much... You still need to have 'fig wasps'
Are these wasps in your area ??
Seedlings require fertile seeds, having a minute kernel inside! not hollow seeds.
To find out if seeds are fertile.. clean/wash them well and drop the seeds inside a clean transparent glass with water
Good/fertile seeds will sunk .... non-fertile, ..float
If you go to Monastir or Mahamdia in Tunisia, near your western border, you may get good potted Caprifigs trees as well as wasps . Over there they grow many Smyrna fig varieties and caprifigs and wasps are available
good luck
Francisco
Portugal