This needs to be fixed and if the WRs are at fault, so is coach Randel El.
They have a lot of work on getting on page with Caleb for routes and securing catches.
If they had that, no doubt they would have played another game and 4000 yds would be history. If DJ wants to stay and be part of the legend, rework that contract and get to work on raising your level.
The D needs a lot of work, but do it with multipliers. I believe that starts front and center with the two DTs. They will push the pocket and help the DE, LB, and DBs. DE is a need, but get the horses in front of the cart first. Get a 3rd rd or after DE to develop and compete with Dayo, Booker, and Turner.