Are you making these mistakes with compressor pedals

What does a compressor do Why are pedals so noisy Where in the signal chain should you put it 00:00 beginning 00:35 I can t hear it doing anything 03:24 This is ruining my dynamics 05:12 The sound is too loose or floppy sounding 07:50 This compressor is too noisy (Applies to distortions and overdrives as well) 09:05 Always put compression before drive pedals or, Always put compression after drive pedals