This works great, only covers the camera on my Mac book so can't use it during video calls but otherwise works great. For best results, lower the brightness on your laptop.
Solitude Screens - Slimmest Magnetic Privacy Screen for MacBook Pro 16 inch - Dual-Sided Anti-Glare MacBook Pro 16 inch Screen Protector - Privacy Screen for MacBook Pro 16 inch Laptop Screen (2019+)
10 Review
Enhanced Privacy with 3M Privacy Filter for 14 Inch Widescreen Laptop - Flip-Share COMPLY Attachment, Gloss/Matte Reversible, Blue Light Reduction, Screen Protection, 16:9 Aspect Ratio (PF140W9B)
10 Review
Ovimir Diagonally Measured Computer Privacy Laptop Accessories
10 Review
π Enhanced Privacy with 3M Gold Privacy Filter for 23" Widescreen Monitor (GF230W9B)
10 Review