Possibly some of this was down to it being the wettest in 25 years.Often mentioned in the media about the Etihad but no mention of empty seats at Wimbedon.Is tennis failing as a sport in the UK
Might also be prohibitively expensive and/or some of the bigger names are missing/retired atm.
There's new stars such as Alcaraz, but no Fed or Nadal (Djokovich perhaps, but he's still a bit of pantomime villain.