I often find that im clenching my jaw and I overthink how my tongue is supposed to rest in my mouth  and so I think I end up clenching. My dentist said I could get a mouth guard professionally fitted that would straighten my teeth and help the clenching. but i just saw this tiktok that said a 10$ mouth guard from amazon can help and will make your facer more symmetrical? do these work for jaw clenching?