Does anyone have a good experience selling their low-mileage car?

I would like to sell my 2020 Honda civic, which is pretty new (mileage: 3000). I've asked Texas Direct Auto and they gave me an offer of 18k. I thought TDA is one of the best used car dealers in Houston, but I think it isn't a great deal for me. Should I go to another dealer, get a higher offer, and go back to TDA again? or What dealership gives the best offers in Houston? or Should I go to the original Honda dealer? They probably want a newer car?