You don't really need to be a creative genius to make great ads and write great copy.
All you need to do is:
1) understand the different types of structures that work
2) research customer stories and pain points and tailor your copy accordingly
3) Analyze the data to see what works and what doesn't
#3 is the most important on this list.
Data analysis combined with rapid split testing backed by statistical significance is what will allow you to identify and consistently create strong ads and copy that convert.