I finally watched a video from BastiGHG and there he had a texture pack where he could see through a pumpkin normally. Are there any overlays where the texture pack stays the same and only the pumkin blur goes away?
You can remove this yourself if you have a texture pack such as Bdcraft.
Open the folder in which all texture packages are.
Head there
Yourtexture package → assets → minecraft → textures → misc
There you will find a texture called Pumpkinblur.png
You open these and make them completely transparent with image editing.
Then you replace your file with the one that was there before.
IMPORTANT: it must also be called Pumpkinblur.png
But is it also possible that I don't have it as a texture pack but as an overlay, so that I take away the blur with any texture pack?
You will need to repeat the process for each of your texture packs. Then you can, yes
Thank you