It's not that either, we had more than 10 games on top of league games.
We had 6 games in FA Cup last year, 6 games in League Cup and 12 EL games - a total of 24 additional games in 22-23. We won 18 of them, drew 3 and lost 3.
This year we had 6 FA Cup games, 2 League Cup games and 6 CL games. That's 14 extra games We won 7, drew 2 and lost 5.
So in aggregate, we've played 38 games outside of Premier League, and have gone W25, D5 L8 in them. This record is obviously somewhat inflated by the fact we played EL in our first season (a very easy group as well, with Omonia and Sheriff, as well as incredibly easy CL group this year) and we've also had very easy draws in domestic cups (e.g. all our cup draws last season were at home).