Low Serum Iron, TIBC & Ferritin, what's wrong?

Hi, all.

I just have my serum iron, TIBC tested to find out the reasons of low
ferritin tested, following is the result

Serum Iron 8.8 (9.0-27.0) umol/L
TIBC 38.1 (40.8-76.6) umol/L

And my Ferritin tested about one month ago was

Ferritin 34.2 ug/ml (6-159),
VB12 245 pmol/l (156-672)
folic acid (folate) >24 ng/l (3.2-6.4)

The following is what I had tested two month ago

MCV 93.1 (82.0-92.0)
MCH 31.4 (27.0-31.0)
MPV 8.2 (8.5-11.8)
RBC 4.05 (3.50-5.50),
PCV 37.70(35.00-50.00)
Hgb 127 ( 110-150)
WBC 5.9 (4.0-10.0)
platelets counts 143 (100-300)

What type of Anemia I have? if someone is lack of iron, he/she would not have lower level of TIBC as I have, but high level, right? then, what's wrong with me and why? Would the VB12/VB complex treat that problem? Or there is anything else wrong with me? What other blood work I should have to confirm the diagnosis? transferritin? seems doubled? I think I am kinda Iron supplement intolerate for it sometimes caused contispation. What should I do?

Thanks in advance

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