Can a incorporeal crearure move through walls? [closed]

Helloy, I´m playing a homebrew character and it states that he can take on a incorporeal form and can move through objects and creatures.

Can I also move through walls?

I know there is do general ruling about that but I just want to hear your opinion, because it seems pretty strong to me. On the other hand I can only use it once per long rest and all items drop to the ground while incorporeal.