Doctor my anemia is due to red blood cells destruction & any iron pills not affected in my case so what can i do to increase the number & size of this?

Red cell destruction: Depending on the etiology folic acid may be helpful. Blood transfusion when indicated. Minimizing precipitating conditions

Depends...: Anemia due due red cell destruction does not improve with iron. If cause is immune system, prednisone may help. If cause is abnormal shape of RBCs, then SEVERE cases may benefit from splenectomy. Your hematologist is best positioned to advise you. If you have thalassemia (causes small RBCs) folic acid helps a little, but there is no fundamentally effective treatment.

Diet and evaluation: Blood cell destruction and Anemia can happen for several reasons. You can adjust your diet to include more red meat, green leafy vegetables, and various beans. In your case, you need further evaluation. The question of why your cells being destroyed? You need to see a hematologist to evaluate why this is happening. Simple other things that may help is rest and drink more fluids. I hope this helps.