PLZ help!

I used fiddler to change the save on my account, if I reverse this by deleting all the pretigies I added to my account, is it free from the risk of banning? has how to get rid of the risk of ban? without leaving traces that I used hack in the past

There is no way.

This is all dependent on the techniques they use to track game save hacking. Some people think they keep all your saves (which is not true as the game is saved constantly when you play). I think they just check your save to make sure it looks correct and maybe compare to a couple other of your previous saves to see if anything drastically changed. ACMs do not have the time to compare your game save to a bunch of other saves.