I bought these for my 955 and haven’t had any issues in about a month or using them. They were super easy to install too (3 Pack) Supershieldz Designed... https://www.amazon.com/dp/B0B3JTXMVK?ref=ppx_pop_mob_ap_share

Here is one for the 955:

https://www.amazon.com/Supershieldz-Designed-Forerunner-Tempered-Protector/dp/B0B3JTXMVK/ref=sr_1_3?crid=1YTC3T1YX9RTE&keywords=955+screen+protector&qid=1660417319&sprefix=955+screen+%2Caps%2C83&sr=8-3#customerReviews

It's the same brand I used on my 945. I had no issues with it.

I don't have a 955 but the reviews seem good and say it fits well.