yep - dont chase the average power as inevitably you’ll end up putting in time well outside your target zone. Just accept that if you coast for a while that when you get home your AP will be a little lower, but on the ride you focus on the power you are putting in at that time and don’t try and adjust it to hit a meaningless number…
Years ago TR wouldn’t show the AP for an interval on the app and it was deliberate as I remember Chad and Nate saying on a podcast that they didnt want people chasing an average. If you go over or under then just accept it and get back on target moving forward 