2 year old girl

My daughter is 2 (turned 2 in December) and when she is in her room and ONLY when she is in her room she strips completely naked. Problem is she is still in diapers and I keep trying the potty but she refuses.. She will get completely naked and poop on her floor and smear it on her walls, self, dresser, toys. urinates everywhere. No matter what type of clothing she has on she gets it off every single night multiple times. Im

at a loss on what to do or how to even handle it? nothing I seem to be doing is getting her to stop doing it. Its been going on for months now. I have let her have "naked" time to try and get on the potty during the day to try and get the "naked time" out and hope she doesnt do it later on but nope.. once shes in her room and its bedtime she rips her clothes off and poops on the floor/bed. Its becoming exhausting cleaning poop off carpet, walls, toys, mattress. any tips? Im at a loss