This is a random question but does anyone know where to buy a metal dryer vent? We have a foil one…

This is a random question but does anyone know where to buy a metal dryer vent? We have a foil one but the dryer says not to use the foil kind because it can cause fire. We live in a mobile home and if it goes up it'll go up fast and it's not worth risking. All the ones I find online aren't long enough. It has to go through a wall then down through the floor. I just want to be able to do laundry at home😭