WordPress speed optimization DOM size

Hi,
Hoping for your good health. I have a website which has developed in PHP WordPress. It is working fine but i am facing speed issues.
In GTmetrix is showing good results but in page speed insights there are different types of errors. I am unable to resolve it.
Kindly any developer guide me how to resolve it.
My website is: https://printerloop.com/
Thank you.

You could try to:

  1. Reduce the number of sections of the page.
  2. Remove hidden elements.
  3. Switch to a simpler or less overloaded theme.
  4. Limit the number of posts/products displayed on a page, etc.

@frankholden thanks for your response.
okay i will go thrught it and test it again.
Thank you.