People slating xG as it doesn’t account for the player are missing the point. You can have elite finishers who will always outperform their xG (eg Son, historically) and shite kickers who fall below the statistical average (Calvert Lewin).
Comparing actual goals scored to xG gives you how good a finisher someone is (or how much of a hot streak they are on….Chris Wood). The more data the better, as always with stats.
A pelanty is 0.7 or 0.8xg I believe.