Focusing on more than one thing is easily the best way to get nothing done.

Certification: Cisco, Red Hat, AWS, Azure. Pick one and finish it. Then do more. Having basic certifications in all of them sounds like a good idea, but employers don't seem to care. Keep going with whichever one you pick.

Programming languages: don't spend a month on every language you can find, or every framework you can find. It's great to know more than just one language or framework but it's more important to actually make interesting shit in whichever one you pick.