A fence of course is mandatory with the pool placement. For extra height, you might select trees or create a shrub hedge that doesn't drop its leaves at any time of the season depending on your location.

Depending on where your property line is and whether there are HOA restrictions, you can erect a screen much taller than a fence in most places as long as it's not on the property line:

Is that car parked in your drive or theirs? If will be difficult to find appropriate plants to hide the view from their upstairs windows. The pine needles will be issue enough when they drop.

Motorized adjustable sun shade

Patio Awnings & Shades · More Info

Permanent shade block

Residential Resort · More Info

Strategic sun sails - could be used for some kind of wall or just placed to block the view. If you're very friendly with the neighbor, you might be able to check out the view from those windows to place the sails properly. Inviting them over monthly to swim should help you bargain for that.

My Houzz: Murtagh Residence · More Info

Cordon steel fencing might be made higher (not sure)

Corten steel wall · More Info

@decoenthusiaste that is my car parked there. I know where you are going with this and I love it!

I wonder if something like this would work:

https://www.wayfair.com/storage-organization/pdp/palram-arizona-breeze-5000-162-ft-x-98-ft-canopy-palr1214.html?&experiencetype=1