Re: pic in # 37
If your dryer is similar to that one. You can get to the innards from the front.
Two clips hold the lower panel on. Remove the panel and you have access to the blower, element, motor. Two 1/4 hex screws and a clip hold the blower housing on. Remove the screws, leave the clip in place and clean the inside of the housing.
No need to pull away from the wall, except the UNPLUG FIRST.
But it’s a good idea to pull away from the wall to check the vent itself.