Any advice you would give for brushing up a resume? I'm not a dev but work in IT and do a lot of admin work, networking and a lot of security work. I am having

Any advice you would give for brushing up a resume? I'm not a dev but work in IT and do a lot of admin work, networking and a lot of security work. I am having a super hard time fitting all of the skills and tools I use on a one page resume. I had considered using like a GitHub Pages resume but haven't had a solid reason to do so.