Dark souls 3 endboss glitch?

I bought dark souls 3 about a year ago and played it to the end boss but could not defeat him despite countless attempts, I then uninstalled the game. But now I'm trying again, not really for fun anymore but rather because I want to end the game and get success (Xbox one) My question now is whether there's a glitch to beat him that will still work in June 2020

So Gael? Or Souls of Cinder?

Wouldn't spontaneously know a cheese strategy for either. It probably boils down to the good old "git gud".

Git gud?

Running gag of the DS scene. Git gud = get good = become a player