New Blender user / animation problem

Hello, firstly sorry if i am posting this in the wrong section.If it’s so ,please move it to the correct one !

I just started out with Blender about two weeks ago and would like to improve.Managed to find quite a lot of cool stuff online but i encountered an issue and i am not sure what i did wrong, hopefully i can get some help !

So i just finished making a very basic animation with a character and even though i added movement to her fingers, it does not render the animation in the final render file ( the exported video ).

Basically this is how it should look like :

And this is how it’s rendering the project

Her fingers do not move.What have i done wrong ?

Thank you reading !