Thank you for those ideias! Unfortunately the red wires are cut off. It seems this would be something really hard to fix indeed.

I can buy new earbuds. I'm saying that I can't buy that earbud model again because they are expensive for me now. Actually, I already bought new earbuds (cheaper one) but I'm trying to see if I still can save that one. I don't know if I can buy soldering equipment. I'm trying to figure out what I would need to fix this and see if it will be worth it.

Thank you for the response. I think this would be a real pain too. I was thinking in buying new cable in a DIY like store and try to soldering them on the buds, but don't know if this would work