You know how a lot of altering bed (or other entities) are requiring other mods to work. I've created the one which doesn't require any mods to work and works with literally any resourcepack ʷʰᶦᶜʰ ᵈᵒᵉˢⁿ'ᵗ ᵃᶠᶠᵉᶜᵗ ᵇᵉᵈ ³ᵈ ᵐᵒᵈᵉˡ

Bed now looks more vanilla

I made bed to look the same by amount of details to recently added blocks(lectern, decorated pots ect) and made them to be connected with each other in any order. You can choose between having all beds altered or just the vanilla red one.

v.1 works on 1.21.6 version or above. Enjoy!