Lots of great ideas here for rabbit hutches

https://morningchores.com/rabbit-hutch-plans/

you can get pre made cages at a pet store, having raised rabbits for 10 yrs, its more sturdy, than most home made. you would have to bend the hardware cloth to make the corners etc. rabbits will chew on wood, and if raising the babies-the mom rabbit needs a brood box with straw etc for the births. then there is the pee and poop issue- police the gages regularly to keep all clean.

Here is a cute one re-purposing an old hutch. https://www.hometalk.com/31400696/build-a-rabbit-house-from-an-old-tv-cabinet

Build a Rabbit House From an Old TV Cabinet

10 rabbit cage plans:

https://www.thesprucepets.com/free-rabbit-hutch-plans-1357137

https://www.youtube.com/watch?v=BgSSy2lKuJk