Hi, Joe ! :))
You really don´t have to know a lot of
fancy chords to write a hit or something close to ?
There must be a ton of songs based mostly on three
chords, some that are IMO really outright ingenious
like f.i. Guantanamera (that I useually refer to
as being a tune that uses three chords absolutely
wonderfully. Here is another tune mostly based on
three chords (E,A,B) (ok there are a few more in
the chorus part):
https://www.youtube.com/watch?v=wI83ZJMIx6Y Cheers
Dani