Vast majority of dogs wants to chew on things. First, when the teeth are changing (around 4-5 months), and later when the teeth are setting into the jawline (around 9-10 months) the dogs have a need to relief the discomfort through chewing. So that's one part of the problem.
Second part of the problem is that dogs are not taught what they are allowed and not allowed to chew on. It takes time, work and persistence to explain to an animal that doesn't speak the same language and is for all purposes is a baby-toddler-teenger the first year of life with you, why he/she is not allowed to chew on things that seem to be perfectly built for chewing on them.
You will have to always keep your puppy in sight, until it learns to behave appropriately. You will have to have dog-toys and long lasting chewy-treats (like bully sticks) ready to relief puppy's teething in a positive manner. When you see them picking something up of yours to chew on, say "NO", and redirect them to one of their own toys. As soon as the puppy grabs their toy - praise and play and treat. You will have to repeat these steps abotu 20000 times before puppy turns 4-5 months, and if you remained consistent and patient, by that age the pup will learn what to do and what not to do. If instead you stick your pup in the crate for the day, and let them out once in a while to play and then "put them away" like a toy, they will never learn how to behave. If you don't redirect from your clothes and furniture in a consistent patient manner time after time, they will not learn to expect the same result, and will assume that sometimes it's okay to chew on things, and other times it's not okay.
My rottie has damaged only 2 things in her puppyhood. One was an accident during play (ripped sweatshirt), and the other one was chewed up cell phone charger (she got to it the first week we had her). Other than that the steps I described helped us teach her "chewing manners". I can even do laundry with her in the room, and she won't get in the way.
Good luck with your puppy training!