This goes back to the 2016 draft. I dont want to go in depth here but Jerry using the second round as his "risk taking round" has really hurt this team.
Lets look at who was available when the Cowboys took a risk on Jaylon Smith.
Chris Jones DT
A'Shawn Robinson DT
Deion Jones LB
Michael Thomas WR
That is just 2016. Instead of building the trenches they took a risk on a red shirt LB who may never be the same again. One example
2019
Available after Trysten Hill
Dk Metcalf WR
Juan Thornhill S
2021
Kelvin Joseph-More red flags than an amusement park was the pick.
Walker Little OT
Creed Humphrey C
JOK LB
Nick Bolton LB
2023
Luke Schoonmaker a TE who we didnt need and who will be almost 30 by the time he needs a new contract was the pick
O'Cyrus Torrence OL
Devon Achane RB
This is 3 drafts where the Jones' used a second round pick on backup players. Where a pick for a legitmate starter was needed.
Yes they have hit on some second rounders but if you look at the way Detroit drafts. They stick to their board. They dont take chances until later rounds. When you are supposed to. Rounds 1 and 2 are for legitmate plug and play players. Not projects.
This is one of many reasons that this team keeps getting lapped by other teams. Jerry needs to turn over all football operations so this doesnt happen again. Because it will. He cant help himself.
The Cowboys have made some wrong choices, but this isn't a fair way to look at it. You can look at the draft of every team and find players that would have been better to pick. For example, it's pretty obvious a lot of teams wish they had taken Chris Jones instead of letting him last into the 2md round.
But since you are talking about why the Lions, lets look at some of Detroit's drafts ...
2017: The Lions 1st round pick is now buried on the Giants bench, their 2nd round pick is buried on Seattle's bench, and their 3rd round pick is out of football. There were a lot of quality players they passed on. TJ Watt, Budda Baker, Dalvin Cook, Joe Mixon, Alvin Kamara, Cooper Kupp, Chris Godwin ...
2018: The Lions 2nd round pick is out of football. They could have had Christian Kirk, Dallas Goedert or Fred Warner
2019: The Lions 2nd round pick only started 16 games for them, and they could have had AJ Brown, Juan Thornhill or DK Metcalf
2020: The Lions 1st round pick was only a full time starter in Detroit one season and is now with Atlanta. They could have had CeeDee Lamb or Justin Jefferson.
2021: The Lions 2nd round pick hasn't started a single game. They could have drafted instead the same guys you listed above that were available after Kelvin Joseph
2022: The Lions 1st round pick was a WR who only has 395 yards receiving in 2 seasons, and their 2nd round pick was a pass rusher who only has 3 sacks in 2 years. They could have had Kyle Hamilton, Trent McDuffie, Quay Walker, George Pickens, Trey McBride, James Cook ...
BOTTOM LINE: Every team would like to go back in time and redraft with the benefit of hindsight, not just the Cowboys