We can help you if you provide us GTmetrix test with AND without Cloudflare.
To test without Cloudflare simply put Cloudflare in Development mode or turn of proxying () the respective DNS entries
No you are here in the community forum. I do not work for Cloudflare. If you want to get supported by the official Cloudflare support you at least have to be Pro-Plan. So you must be a paying customer, not a user. Support is expensive and can not (shall never!) be offered for free.
You can post your result here in the community forum if you like.