Can't be arsed going to Champions League games anymore. Happy for us to commit to the competition as a club, but a few years ago I changed jobs and getting home in time to get back to the Etihad was too difficult. Got out of the habit of going to games and started watching on TV instead.
Still go to every league game (season ticket holder) and will try to get tickets for later rounds in the FA Cup & Carabao, but the "matchday experience" of a Champions League game is as dull as sin and the feeling of being in the Champions League is very rarely worth the hassle of getting to games on a weeknight for me.
It all gets to be too expensive in the end. Cup schemes, cup tickets, drink at the game, petrol, etc. Easier to stay in.