What´s wrong with goalkeepers, has SI ever looked into this?

[AurioDK]

In my 6th PL season Arsenal and M. City are sitting top of the table after 27 games with the worst goalkeepers in the league according to save percentage. Checked each keeper´s stats and they looked excellent to me. Manchester United´s Onana on the other hand is doing well, so there is a disparity I fail to understand.

My keeper is named Kastenmeier, has decent stats all over but hardly ever gets a 6.9, it´s more like 6.2-6.6 almost every game. He is not doing well when compared to other keepers, one of the worst.

From what I have seen of footage the keeper is often blamed for goals they can´t do much about, even if it´s a low XG shot. Arsenal had 2 fantastic long shots against me, both went in hitting the triangle, few keepers in the world would have saved them and yet Kastenmeier was down to 6.2 in a game I lost 1-3. The last goal was a tap in from Arsenal from a cross, nothing the keeper could do either.

Pair the above with the fact that underdogs against me seem to have a much higher scoring rate and it makes sence for world class keepers to be abysmal. The only top keeper to actually be an exception to this is Man Utd´s Onana as mentioned, he is doing well all across the board.