“F” rating, dirtier than 83% of all web pages globally.

I’m a BIG fan of figma I use it everyday for work and personal designs. I started using figma’s recent product figma sites in Beta. It’s amazing. My first impression after using figma sites was “Im going to make so many sites soo many…..”. Today out of blue I tested one of my website on www.websitecarbon.com I got a “F” rating, dirtier than 83% of all web pages globally. Is it the resources im using on the website or is it the hosting? I’m reading more about websitecarbon’s rating system.