On a

• fully updated (won't work in outdated 33 where kernel-devel has a newer version than your current kernel)
• stable system (won't work in rawhide)

install akmod-wl (which includes broadcom-wl)

sudo dnf install akmod-wl

sudo akmods --force

reboot. done!

if it doesn't work:

check your kernel with

uname -r

it should show the same version as the kernel-devel version above.