How to Improve Mobile Page Speed Score from 35 to 50?

Hi! I am trying to increase the mobile page speed score of my website (www.shopping.tennis) from around 35 to 50 and would be grateful if anyone could help as the Cloudflare support team has not reverted to me yet after 3 days. I have already answered a lot of their questions (including some files that I sent them) and those questions & answers, as well as the relevant web diagnostics files they requested, can all be accessed through the following links:

Thanks, in advance.

Regards,
Kam

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