For smaller publications, how do you practically manage/ prepare for litigation threats and cease and disist letters?

We are a start up , team of 2, practically no budget.

We have taken out a basic public liability insurance but this is enough in your experience?

Right from the offset, we had a couple of nasty experiences where (even though we were reporting positively on a business), we got some aggressive phone calls and letters. Its made us somewhat wary and are now self-censuring/ over thinking.

(Not wary of confrontation and reporting the facts, wary of having to pay out thousands in legal fees!)

Any tips appreciated!

[UK based]