I have a Spigen one with a applicator that, for me prevented bubbles (a second glass is included though)

Glass t R EZ

Any cheap shit from AliExpress. They are all the same regardless if it’s from China or some fancy brand like spigen. Really, get the cheapest you can find.

Yes, Best Buy will honor the lifetime warranty on the purchase as long as you pay for them to install it for approximately 8 dollars and some change. Which is not a bad deal pay around 33 dollars once and get free replacement screen protectors for the life of the phone. So if the screen protector gets scratched or cracked or tarnished then take it back to Best Buy and they will replace it for free. They have you create an account at the store when you buy and pay to have them install it and the account is free and will connect you to your purchase so you won’t need to bring a receipt or proof of purchase also, which is very convenient. 10/10 will buy again for my next phone.