There's also the fact that teams are apparently guarding their picks for next year like they are made of pure gold. Teams are banking on a LOT of players that decided to go back to school to make the talent pool next year super deep.
There's usually like 1500 players or so leaving school and signing up to be drafted and this year there were only some 700.
So I think there might be trades tomorrow, but almost no teams are going to give up 2022 draft capital. Too valuable.
(unless you are the Bears and are absolutely desperate to save your jobs, then you give it all up for Justin Fields and pray he bails you out this year and extends your job for one mroe off season at least)