Home Depot and Lowes have some window films but thought the Home Depot had a greater selection and larger sizes. Checked on Amazon and thought the pricing was very good. Good reviews as well. Here are a couple.
https://www.amazon.com/Adhesive-Privacy-Frosted-Decoration-Removable/dp/B072FP1M4H
https://www.amazon.com/dp/B06XCWFTR4/ref=psdc_16136296011_t2_B072FP1M4H