EGV 6 Pack for Google Pixel Watch 45mm Screen Protector, Pixel Watch 4/3 Screen Protector [Upgrade Flexible Film] Self-Healing, Anti-Scratch, [Non-Bubbles] Soft HD TPU

Maybe try a different brand? Mine never slide off and usually last 6-8 months before they're banged up and I need to put on a new one. https://a.co/d/00EMmljA

This works well on my PW3 45mm. https://www.amazon.com/dp/B0DBZ6KH7X?ref=ppx_yo2ov_dt_b_fed_asin_title&th=1

These work well for me, no sliding. https://a.co/d/0blJh4x7