You've tried some glass screen protectors with no luck, now what? That's where Skinomi comes in, a brand that's been making "film" screen protectors for years. This isn't a cheap film like you'll find in Verizon or AT&T stores either. It's a durable military grade film designed to keep the screen free of scratches and damage.
Skinomi has been a go-to brand for years, and it's because their protection works, and works well. Skinomi films are flexible, tough, resists scratches and are easy to install. Each film has self-healing properties too, so scratches should heal over time.
You should be able to install it with ease, using the company's easy liquid install process. As an added benefit each Skinomi has a lifetime warranty.