Buy yourself professionally written CV. Get nice looking template and hire someone to check content and help with personal statement. Create linkedin profile and start building network.

Do some actual training towards role you want: Udemy, Coursera, Linux Academy etc. This important as it would help to prove you have right skills and "passion".

Instead focusing on your responsibility you should focus on business impact. I would avoid grading your skills. You do not have enough experience to objectively measure these skills.