So the drum is in direct contact with the bottom of the dryer base how do I fix this as it is making a screeching noise and I've had to stop using the dryer. The dryer brand is technika
Some advice would be really appreciated

While I am not familiar with your specific brand, and do not see any parts available, most dryer drums are supported on rollers. The drum is independent of the back and the belt rotates the drum around. You will need to gain access to the inside cabinet to see the rollers. Lift the top, remove the front and you should see the bearings. In many cases, the ball bearings or rubber rollers wear out, the drum settles and rubs against the cabinet, making a screaching noise. It is a good choice to replace all of the rollers

There are what is called "rollers" that the drum rides on. The rollers are bad. They will need to be replaced.