How to deal with cons of your trading system?

Hello.
We know that every trading system has its own pros and cons.
As a trader, I think dealing with cons is much more important, because if we deal with it smart, we will not lose money.
I always consider losing trades as cost of my business, and take it without emotion.
However, I want to minimize it.
What do you think?

if your trading system is profitable ,then just accept all the pros and cons.

if it’s not profitable ,dump it that start over.