My car would not start. The ectricty is good. I put some chemical in the gas and the car start but the engine light still on.

My engine light been on. The other day my car would not star. The better is good the car have power the switch work but it feel there is no gas and I had half tank. So I had some chemical that I mix with the gas to help the car. And the car start right away after I put the chemical. I think it is the gas filter and fuil pomp. But I am not sure. Sec and opinion is good.
https://m.youtube.com/watch?v=mDIlwbx0B-s
I feel I have a Smiler case to these person
Thank you

My car has 180000 miles.
My car has an automatic transmission.

– My car would not start. The ectricty is good. I put some chemical in the gas and the car start but the engine light still on.