Character collision capsule won't follow jump anim

Aparently enabling that root motion check box requires the skeleton to have a root bone, mixamo animations don’t have this bone. I’ve followed a few tutorials on how to add this bone, but I get errors and won’t get imported. Is this really that hard?, I mean, it’s just a jump animation, I though something this basic would be easier.

I just want my character to jump, that’s all. No advanced stuff, just jump on obstacles and over obstacles.