>>2082793im a lil lit but
>as before>cable seems fucked up in general>cable is not even straight to clamp, brake arm appears seems to move without cable movement even after "tightening"your tension is bad, it is overtly slack, you didnt tighten the cable enough at all, it might not even be loaded properly
>completely free linear movement from brake leverfurther proof, no slack is taken up before braking happens
>strands poking outcable itself is fucked, not enough for total loss of braking but isn't good and will require constant readjustment if not reloading
the rubbing is a separate brake assembly alignment issue but your cable isn't loaded correctly impacting braking performance regardless of alignment and probably the brake "rubbing" is an artefact of overcompensation for improper cable loading
pull it as tight as you can so it works at all, and then increase the preload so you can diagnose alignment