Are you supposed to do 5x5 by itself or are you supposed to supplement

>>42617789
>or are you supposed to supplement it with something?
yeah. with weights.

>>42617789
My understanding is you do it alone for a while then either switch to something similar or add on accessories when you start stalling to help.

>>42617789
if you know what you're doing then add assistance work for areas of weakness.

you probably don't know what you're doing which means just add dips and pull ups.

don't get too occupied with the small stuff. just keep progressing in the big lifts.