[jwatte]

Is everyone cut out to be an Olympic athlete, or are some genetics involved? The answer is "it's a mix."

Can anyone with diligent work ethic and a continual effort into learning find some place that needs their skills? Very likely. How well does your skill set match how broad a market? It depends. If you are narrower, or aim higher, it will take longer to find a match.

That being said: if you have sysadmin skills, have you considered an SRE position? Or DevOps? It may be that you find a better match there.