3D armor transparency

I tried to make a 3D armor type of diver armor and in blockbench the transparencies appear correctly but when I import it to mcreator in .java and its entity texture with the transparencies but in Minecraft the transparencies do not appear it only shows everything opaque here I attach photos
https://imgur.com/wvh7mI2
https://imgur.com/D4Wmjyh

and apart from that I need help, since for example I have to move the helmet away from the body so that it can be placed on the body on the head and the same with the boots since I have to change their location so that they remain on the feet but that it may be later type like that photo of this model.
https://imgur.com/hQEy6sQ