You need unilateral vision. You need a GM/HC who know what they are signing up for. A total dismantling, trading away mid tier players to stockpile picks, minimal FA action except young guys. You get a top 5 pick and take either the best QB on the board, or if your talent evaluators feel there isn't anyone even close to worth it, trade down or pick BPA and the very next pick take a QB. Then the next season, you powow on the state of that QB. If he's making progress and you feel comfortable with him, you draft a guy in the 2nd or 3rd to back him up. If not, the same strategy as above. By year 3, you'll either have a QB making strides or your latest rookie with a year of the system competing for the job. As well as hopefully multiple blue chip players ready to make a push. In year 3, you go all out, sign a big FA or 2 in the worst spots of your team, and make a postseason push.
And that, my friends, is basically what the Oakland Raiders did. And they are 10-2. Mack, Carr 1 year. Cooper the next. Cook to back up Carr. And then went all out in FA (Irvin, Osmele, Sean Smith.)
The fans don't matter. The pressure isn't there. It's vision and a plan.