Not a pro but i’d run it paralell to the house if you want the immeidate backyard to be mostly pool - fwiw i’d want it a bit tucked away personally and would have a landscape designer give me some options of how else it could be placed in the yard - part of that conversation would be what else besides swiming/pool centered entertaining am I interested in for the backyard space

Do you have a site plan of your property with your house on it? That would help answer your question. Your property may have setbacks that will govern in part where a pool can be placed.

Too little info .PLease show us your house and size of lot too