f for face no work

whenever i try to make a face (by pushing the f button) it says incorrect # o’ vertices. I tried with a circle w/10 verices at first then w/ other shapes and it still no work.
Plz assist,

Here’s the assistance, sir!

The right keys are Shift-F, sir!

If you just use ‘f’, you can only have 3 or 4 vertices selected.

srry about that i saw it in a tutorial and i guess it got mixed up somehow
im still pretty new to Blender and appreciate your help