i was banned a While ago for quote "complete disregard of market board rules" but i don't know what i did wrong and i don't want to get banned again

What was the name of the account that got banned?

go to ur user cp list on ur old account when u get it back..... then read the infraction posted on there to see what u did wrong

You were banned for disregarding the market rules.

The infraction should be more specific.

You should read the market rules entirely. That means the items board rules, texture board rules, and general market rules.