The more teams are added, the harder it's going to be to rebuild. You need good coaching, which the Ducks are not getting. On top of that, you need either that guaranteed superstar (usually a 1st overall pick) or to sign/trade for one (good GM). Outside of coaching choices, Verbeek has been an OK GM. The Ducks also have some of the worst lotto luck. Through their whole rebuild, they've never moved up and didn't drop only once when picking in single digits.
Ducks have 3 top 5 picks, and two of those years were some of the worst years to have that pick. Carlsson was a top 2/3 pick, that was a good year to have a top pick. The other two were McTavish (Covid year so scouting reports for most prospects were a year out of date) and Sennecke (where there was what, 10 players in the same tier after #1?).
Verbeek's agent moves have been fine. Not super stars, but effective players. Vatrano and Gudas were good signings (even with Gudas not looking good this year). Strome has been solid, maybe a little overpaid. Killorn is overpaid and the big problem is Cronin refusing to move him off a line with Carlsson (those two have zero chemistry). The Gauthier trade is looking like his best move.
The biggest issue is the coaching staff. Special teams are terrible. Offense is horrible. Defense has gone from historically bad to just one of the worst in the NHL.
Verbeek can turn this rebuild around this summer with two things... the most important is a good coach that will get the most out of this team. Get someone proven, Ducks don't need to spend several more years going through failed first time coaches. The other is a lot harder... try signing a big time FA. If Rantanen or Marner make it to FA, they'd be great adds, even with an overpay. But it's not likely to happen. Ducks could also go the trade route. I would even move the 1st+ (assuming it's in the 5-7 range) for a good young forward.