The best way to protect yours is by using a Xiaomi Redmi Note 8T protective glass. Here's a great deal that's optimised to protect your screen and is made with solid quality. 

Features of this tempered glass for Xiaomi Redmi Note 8T:

• Excellent protection against scratches and tears.
• Protects the screen from accidental knocks and drops of the phone.
• Case-Friendly
• Ultra-thin tempered glass of just 0.3 mm.
• Good quality.
• Safe 'anti-explosion' function - the protective glass will never shatter and be dangerous. 
• Cleaning kit for the screen before mounting included.

You greatly minimise the risk of scratches and tears to the screen when using this type of Xiaomi Redmi Note 8T screen protector.

Material: Tempered glass