How to preserve wash n go while preventing breakage

I have short hair. After sleeping on my hair, it becomes very flat and sticks to my head, this causes my hair to become very very tangled at the end of the week because it gets all matted. I end up with TANGLED hair on wash day. How do i prevent this at night? I tried twisting before bed but my hair looked weird the next morning because I have heat damage on the sides of my hair. Please help me! Should i hold my hair with elastic bands? will that cause damage? update: I tried using large clips to clip back the sides of my hair, sleeping with large clips aint comfy but idk what to do.

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