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You err in what the Church is, to begin with. It is the body of Christ. Christ is the head.
Now review your theology with this in mind.

How does YHvH define "church" i.e.Ekklesia ?
The Law of First Mention
Is it all those called out by YHvH ?

A study of the word "church", in the Koine Greek : Ekklesia.

Was the "church" started at the YHvH commanded
Feast day of Shavuot (pentecost) as some say ?
or

Did the "church" exist earlier ?

Using the LXX as a guide we see that the Ekklesia
is first used in Deuteronomy 4:10
NAsbU Deuteronomy 4:10 "Remember the day you stood before YHvH, your God
at Horeb, when YHvH said to me, 'Assemble the people to Me, that I may let
them hear My words so they may learn to fear Me all the days they live on
the earth, and that they may teach their children.'
Also see : Deu 4:10, Deu 9:10, Deu 18:16, Deu 23:3, Deu 23:4, Deu 23:9, Deu 31:30,
Jos 9:2, Jda 20.2, Jda 21:5, Jda 21:8, Jdg 20:2 Jdg 21:5, Jdg 21:8, 1 Sa 17:47,
1 Sa 19:20, 1 Ki 8:14, 1 Ki 8:22, 1 Ki 8:55, 1 Ki 8:65, 1 Ch 13:2, 1 Ch 13:4, 1 Ch 28:2,
1 Ch 28:8
What was the purpose of the Ekklesia ?
Was it a temporal corporation to rule on earth ? No !
Was it to have a temporal head ? No !
It was a gathering of YHvH's chosen people to hear His Word ?
and learn to Fear YHvH all their days ?
And to teach their children the same ? Yes.
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Ekklesia is from the Hebrew Qahal (kof, hey, lamed)
(kof => The HOLY ONE
hey => grace, breath of G-d
lamed => teaching and learning)

which is haQahal The assembly (hey, kop, hey, lamed)
In scripture it is always used to describe
those who have been assembled by YHvH.
It begins in Exodus 16:3 ( the bread from heaven )
and continues to Nehemiah 8:17 (living in Booths)
NAsbU Nehemiah 8:17
The entire assembly of those who had returned from
the captivity made booths and lived in them.
The sons of Israel had indeed not done so
from the days of Joshua(Yehoshua)
the son of Nun to that day.
And there was great rejoicing.

shalom b'SHEM Yah'shua HaMashiach