Yeah it's a hard one to dice properly.
https://theanalyst.com/na/2022/10/premier-league-stats-2022-23/ is the opta data. Look for "EXPECTED GOALS AGAINST" and you can dice in whatever way you'd like here.
We do concede from set pieces (7G from 9.56 xG) - not quite relegation form, but borderline relegation.
Absent other context it's hard to say what's going on. Maybe we concede a lot of corners and free kicks but do a fair job at defending them. Casemiro's yellow card situation is a symptom of that. We still allow a lot of transitional attacks - don't quite choke the game like Liverpool / City. Case even hinted at something along those lines (game in England is harder because there are a lot more transitions than the game in Spain).
Maybe we let teams get low probability shots off given the volume of shots (19th in table - 110 shots at goal).
Hard to say.