If stock price can go to zero or decline significantly, should sell the stock asap and don't sell covered calls and/or secured puts. The fundamentals are not good.
Selling secured puts is good starting point to acquire shares cheaper than the current market price.
First thing first, you should have already determined from due diligence that fundamentals are good i.e. low probability of declining significantly, definitely not to zero, something is wrong with the due diligence if that happen. Then,
a. Not sure whether it will go up or down from here but don't want to miss any appreciation => Short secured puts
b. Very sure it will go up from here => Long shares
c. Very sure it will go up very fast from here => Long calls.
d. Very sure it will do down very fast from here => Long puts.
e. Very sure it will go down from here => bear spreads
a., b., c, are scenario when you don't own any shares yet (or want to add more).
If have shares, then for a. should short covered calls.
b. and c, same action if you want to make more money
d. sell shares, long puts if you want to make money
e. same action