How do I specialize?

Hi, I am a senior Devops/Platform Engineer with 6 years of experience. I work mostly with Azure + some AWS and on-prem. My jobs were always "Jack of all trades" kinda deal. Set up networking, dns, kubernetes, certs, firewalls, pipelines, observability, argo for devs and maybe some managed database. I also sometimes program or debug applications for developers(c# and javascript). I don't hate it, but it just feels so... basic, I am not gaining any