After Cloudflare my website is slower

Hello,

I just signed up and install the Cloudflare plugin into my website.
It’s a WordPress WooCommerce website.
I also have WP Super Cache plugin.
After making the installation I got lower speed results in both Google and Gtmetrix.

I’m getting 8 in Google and 64 in Gtmetrix.
Before I was getting 12 and 84.

What I did wrong?

Thank you