Story as old as time. Build a solid defensive base and grind out set piece goals. Do ok. Set piece goals dry up. Make some tweaks to try and find other (hoofy) ways of scoring, solid base disintegrates. Panic sets in, performances worsen, goals are leaked. Inevitable threshing.
Every limited manager has been down the same path. It worked for longer at Burnley because they had players who knew it was their peak, and fought to be PL players.
We have absolute wimps, most of whom are either 45 years old, or think they are better than Everton (but really aren’t), or would rather be at Lille or somewhere gentile. None of them watch any football. Or if did they’d see players like KDB who can barely run flying around the pitch clattering into people to stop counters. Anyone can do it. They have no idea the levels of effort and tenacity required be anything other than also rans. They dont love football. They aren’t desperate to win, they just don’t want to make a mistake that makes us lose. That’s enough for them. And yet repeatedly they do just that.