I replaced the belt in a 20 year old dryer. Took about an hour and cost $20.00. Been running another 5 years. That’s the extent of my expertise.
Today we changed the door switch on our clothes dryer, old one wore out and did not work. This is just one repair where the internet has saved us a bundle. The repair service we used to use now charges 165.00 for a service call. Plus parts. Found the model number of the dryer and did some research. Got the part for 5.93 free shipping and watched a short you tube. You tube has tons of fix it videos.