Birddog wrote:
Hi i am new to this kinda thing and do not know how to fix walls but i
...

half sheet of drywall or something as thick as the wall
preferably one that has a smooth or matching surface

make the hole bigger if you have to, in order to expose the studs
(your patch is going to fit into the same shape as the hole)
you need something to screw your patch to

just line it up

screw it on
or use small nails, tac it on..

use joint compound and a spatula
put the joint compound over the cracks..directly THEN put the tape over
the compound.
THEN smooth some more compound down the length of the tape... go wider
than the tape and smooth it down aestetically... it's a trade skill..
but you should do fine on a patch