I have an e-commerce website built in .NET which I want to optimize for speed

Hello, I have an e-commerce website built in the .Net framework I need to optimize it for google page speed insights for 80-85 on mobile and 90 for desktop

The current score is 40 on mobile and already 90 on desktop

I will share the link with the shortlisted candidates

I want someone who can guarantee a score of 80-85 on mobile on google page speed insights