If port 80, 443, or 8080 is open, standard directory brute-forcing is just the bare minimum. You must fix your web enumeration by adding:

JuicyPotato doesn't work (common on Windows Server 2016+). Fix: The OSCP fix is to use PrintSpoofer or RoguePotato instead.

How many or lab machines have you completed so far?

The OSCP philosophy is "Try Harder," implying manual exploitation. However, the exam environment is now larger.

That is the fix. And it works every single time.