GTmetrix optimization - CDN configuration breaks my admin panel

I am looking for an experienced professional who can help me optimize my website's performance by fixing the slow loading times caused by an issue with my CDN configuration. Speed increases after I configure CDN but my website gets issues on admin panel and functionality breaks-
https://gtmetrix.com/reports/www.cannabryl.com/l7Lsxf7q/
Main Issue:
- Slow loading times , CDN configuration

CDN Provider:
- Cloudflare

Previous Solutions Tried:
- Yes, but they didn't work

Ideal Skills and Experience:
- Extensive knowledge and experience in optimizing website performance
- Proficiency in CDN configuration, specifically with Cloudflare
- Understanding of troubleshooting and resolving slow loading times
- Strong problem-solving skills
- Excellent communication and collaboration abilities

If you have the expertise and skills required to fix this issue and improve my website's loading speed, please reach out to me.