Broader context in Ephesians is the devil, not a physical but spiritual being
“Put on the full armor of God, so that you will be able to stand firm against the schemes of the devil.”
Ephesians 6:11 NASB
I wish to draw on how the LXX translates the passage in Daniel
“But the prince (king of the king) of the kingdom of Persia was withstanding me for twenty-one days; then behold, Michael, one of the chief princes, came to help me, for I had been left there with the kings of Persia.”
Daniel 10:13 NASB
My understanding is that behind the king of Persia was a king in the heavenly realm and it was that king that withstood the messenger who came to Daniel.
In view of this Apostle Paul most likely had in mind in Ephesians those in the heavenly realm and he says as much in the verse
“For our struggle is not against flesh and blood, but against the rulers (rulerships), against the powers, against the world forces of this darkness, against the spiritual forces of wickedness in the heavenly places.”
Ephesians 6:12 NASB
The distinction is made that these are in heavenly places. They are therefore not human
“Remind them to be subject to rulers, to authorities, to be obedient, to be ready for every good deed,”
Titus 3:1 NASB
These are indeed humans in positions of power.
It does not follow that all people in power have an evil counterpart in the spiritual realm. It may be the case but even if it be the case, it is established by God or allowed by Him.
“Every person is to be in subjection to the governing authorities. For there is no authority except from God, and those which exist are established by God.”
Romans 13:1 NASB
Same Greek word used here too εξουσια
I would love to explain further how God allows some human leaders to be influenced by evil leadership in the heavens but it will deviate from your question.
In summary Titus is speaking of humans in position of power without specifying or drawing a distinction between those leaders being led by God or led by satan. Ephesians cuts to the chase and exposes the real power brokers in the heavenly realm as having authority over (some) human rulers and therefore when fighting it needs to be directed right at the source and not toward the helpless humans. And since the true opponents are spiritual beings, the warfare and weapons ought to be spiritual.