Hey so I was just looking around my Blender stuff and then I saw that an image texture was duplicated numerous amounts of times, and it’s the same with literally every single image texture, and this makes it so Blender always crashes when trying to render. Anyone has an idea how could I remove all the duplicates?

It can be done through the outliner.
Switch the mode to “blend file” and you will have access to a list of all images.

You can right click on one and choose “remap users”. This will allow you to replace every use of an image with an other image.
Sadly, it doesn’t support doing them all at once, but after you have done one, the next you do will default to the same choice, so for this reason I would recommend remapping a single one to begin with instead of selecting them all once.
It’s also possible to do the same with materials.
Hey sorry for the late response but this was exactly what I was looking for, thank you!