I'd like to know how i could get back my default minecraft animations, like for example my handheld items normal position for one of the arms.
Of course i have this picture as a reference as to what i mean by comparing both hands, you can see that both are holding blocks but the primary hand hasn't moved to a position like the offhand.
which is really odd. i'd like to know if there is a fix.
I am using a 1.12.2 Blockbuster mod ver: 2.6

Also when holding a Bow that is suppose to have a pointing animation. it doesn't move from that single position like a statue.

Any ideas or theories? Because i sure am bothered by it. & if its not possible to fix then i guess ignore me.

Sounds like the model was edited or something. Try removing model.json file (if they exist) from .minecraft/config/blockbuster/models/fred/, .minecraft/config/blockbuster/models/alex/ and .minecraft/config/blockbuster/models/steve/, and reloading models with /model reload command.

Sadly there is not any model.json in those folders.
of course I have completely forgotten to also mention that i do have a lot of mods (31 to be exact.) in this instance of minecraft which there is a possibility of conflict with Blockbuster.
i've taken that into consideration.
so i will check it out by making a completely new folder with a new blockbuster download of the same version.

this is a picture from a completely different profile with copied mods from my mods folder.
but i did not newly download them as i said i would but this time its just those listed below

forge - 14.23.5.2859
Mods list:
blockbuster-2.6-1.12.2
mclib-2.4.1-1.12.2
metamorph-1.3.1-1.12.2

i have also ran the same mods with newer versions of Blockbuster & mclib for 1.12.2 & they also have this bug.

strange, i'm not having the issue

Weird.
my friends also have this problem when we do rp vids & stuff.
its been a problem for me and the people i know for a long time now. i've been checking out ways to fix it but never found anything.
mysterious bug for sure... and the weird thing is the first screenshot i took for this post was using the actual Minecraft launcher with Forge. but the rest were different profiles with completely new downloads in curseforge.

Edit:
The Problem can occur from anything from:
Forge version, something in the core minecraft program that is in the files making it so or anything!
it might be the multitude of mods i've used for many series for friends. might be a computer problem.
There are so many variable's to cause it, that i am going kind of crazy over it.
i could fix it by actually morphing into a model but that would take extra work just to put on a morph for the reason for a few animations just being missing because the mod itself or its other core use mods might be affecting it.
and i know it is within these 3 mods because i actually had to search through 70 mods to find out which mod caused it & get rid of it. but this time i have to use it. (sorry for the rant)