Employer life insurance can often be cheap. Without knowing your age, health, and the face amount represented by 3x salary, it's impossible to say if it's a good price or not.
The main drawback is that it goes away when you switch jobs or lose your job. The ugly scenario would be if you got fatally ill, lost your job, your life insurance coverage ends, and you die. Rare, but it could happen.
When I had young kids, I bought cheap term life from a reputable company after going to a place like selectquote.com. I reduced / canceled it as the kids got older and I saved up a FIRE stash and college funds. If I died, the FIRE stash and college funds could be used to launch my kids at least through college.
If you don't like selectquote.com, there are a number of places out there that shop term insurance across multiple companies.