Weird patterns on the walls

i have these weird patterns on the walls and i don’t know how to fix it. i tried many things i found on the internet but nothing fixed it. i added a cube inside the room and everything was built perfect, then i moved a wall inside the house and it looked perfect, it is kinda weird that happens. thank you for your time

Consider attaching a screenshot - otherwise it’s pretty much impossible to figure out what might be wrong.

edit: This, right?

maybe you have accidentally doubled the walls?

so that two identical walls are at the same coordinate and overlap exactly?

check the world outliner, if there are only the desired objects.

often happens when accidentally holding ALT while moving an object…

yes, that’s it. i tried to attach the screenshots here but for some reason they didn’t