Advice on my CV would be much appreciated

Graduated in 2025 in mechanical engineering and wanted to get into IT, long term plans for network engineering specifically. I’ve tried to apply for help desk roles but I’m constantly being rejected, haven’t even made it through to any interview stage. I understand I have a lack of experience but I am applying for entry level roles. Aside from actually taking my CCNA exam, what other advice do people have for me?
Not sure if this is useful, but I am from London also.