Frigidaire dryers use a post and bearing support system. The noise you hear is the post grinding away on the support.
This is the kit to fix that dryer and a link to the kit
It cost 24 bucks and ships overnight.
Now to fix it requires a phillip screw driver to undo all those screws, I would start with unplugging the unit, removing the two screws in back for the top panel, two screws for the bottom kick panel, located all the way down, hard to see so tilt unit back to access. Next is four screws at the front corners above the user panel and two inside at front left and right sides about nine inches down, now there are two more at the bottom of this door panel where you pulled the kick panel off. After this there is two wire harness clips, squeeze and pull they come off and gently pull at the top sides as there is retainer clips which secure the panel. Ok? Alright now you see the drum with belt attached, get a flashlight at memorize how the belt loops on the tensioner to the motor pulley and take a photo if needed:) Remove the belt and one more screw top middle in front holding a yellow bumper for the drum. The drum while come off by lifting the back of the drum firmly as it clips in place on the bearing support. Now pull the drum out and if I didnt warn you watch out for sharp edges. You will see the flange with shaft on the drum to replace and the bearing support on the back. The back portion screws together with two screws through a retainer to hold a small ball bearing in, I suggest getting a buddy to hold the back clip when replacing as it is a stretch. In the photo above you will see all the pieces on right go in this order metal clip, plastic cup, ball bearing onto panel and hold clip on back and insert two screws, with a buddy and some grease to hold the ball bearing this is the easy part. The flange has three screws and you must thread them with out stripping the heads off. A buddy again to share the moment is best to hold the drum while you insert the screws. The last part is putting a 1/2 tsp of grease in the plastic cup and following the instructions in reverse. Dont forget the wire harness as you reassemble or the belt looping on the tensioner.