If Alabama gets an active coach with a proven track record, it will be much easier. If you look at the recruiting rankings from 2023 for instance you see:
#2 Smart
#3 Sark
#9 Lanning
#11 Dabo
#19 Norvell
#23 Kiffin
#26 DeBoer
The further down the list you go, the harder it becomes to hold things together basically, the ones with solid ties to current recruits won't have nearly as much trouble. You can see the drop off even on that list...
The only one on the list of names circulating that won a title (as a head coach, Lanning won as a DC) is Dabo and a lot of people around here have him as their least favorite. I don't think he's the risk some see him as, in fact I think he's much safer than Kiffin, but I see the appeal of someone like Lanning who doesn't have any baggage at all really.
If you are going to take a shot on someone that hasn't won it all yet, you'd be hard pressed to find a better candidate than Lanning who recruits well, recruits the portal well, and has had basically nothing but success (unlike Sark and Kiffin for example).