Pics of your couch would help there are many different ones for many different shaped couches. I liked these ones clearly very different but what I found important is to make sure it’s shaped for your couch, Velcro around the legs helps it stay and shove the stinking foam sticks in well.

CHUN YI 1-Piece Jacquard High... https://www.amazon.com/dp/B00X59EJ6Y?ref=ppx_pop_mob_ap_share

Easy-Going Stretch Sofa Slipcover... https://www.amazon.com/dp/B07K8DLNF7?ref=ppx_pop_mob_ap_share