Okay, what is "it" exactly.? Like what is the error specifically? Because to be honest with you, I can't trouble shoot an "Everytime I try to Odin it fails. :/". That tells me nothing of your error or what you're even trying to flash. More details first and then we can help you.
Sent from my SM-G950U using XDA Labs
probably referring to being unable to use Odin successfully. i was having same issue while trying both USB 2 and 3 ports and multiples of each on my PC. i was about to give-up when i thought that maybe it was a windows 10 issue. transferred files onto flash drive "borrowed" my mother-in-laws for a few and surprise her windows 7 with USB 2 ports worked perfect. now about the original question, i would also like to know since im wanting to trade in for the S10 Note series but wanted to revert completely back before wiping so that there's no "issues" with the trade-in later down the line that will loose me both my phone and my credit toward new phone. anything is greatly appreciated.