Installing A Floor Fishing Boat Do You Have To Use Underlayment Floor Liner When Installing Laminate Flooring On Top Of Concrete.?

Do you have to use underlayment floor liner when installing laminate flooring on top of concrete.? - installing a floor fishing boat

I'll take the carpet and into a cheap laminate flooring on my main level. I reasearching different story, saying that the land use with this T-shirt, click / lock floors.
I helped others in the organization and never used. Has anyone advice .. I do what I do too, but will also save money.
Thank you!