That the Tetragrammaton was known by jesus and christians is clear but it was not pronounced and replaced by „Adonai“ hebrew and „kyrios“.
Look what the gospel writers did, they replace even "God" often with "heaven", "kingdom of heaven" instead of "kingdom of God".
It was a sign of respect of God not to use the title and the name, like jews do today.
That in some greek exemplars of the Olt Testament the Tetragramm was not transcribed as Kyrios does not mean that kyrios was false or that christians generally liked to pronounce the NAME .
Christian were not called „the people that pronounce the name“. That were not know as people who made blasphemy and were stoned to death in a row after pronouncing the name, ...because they did not do it.
__
But what did Jesus mean in his high priestly prayer?
I made known to them your name, and I will continue to make it known, that the love with which you have loved me may be in them, andI in them.” John 17,26
https://www.biblegateway.com/passage/?search=John+17&version=ESVTo make known Gods name meant simple to honour it, to put it on the first place in life. "Knowledge" has in hebrew the meaning of "loving" someone not merely lexical knowledge.
Jesus dit not need to pronounce the Tetragrammaton to make Gods name known.The name of God was for Jews a sign of Gods presence. Jesus too was a sign of Gods presence called Immanuel [God is with us] by the church.
The revelation of the Name to Moses out of the firy thornbush was a sign of love and mercy towards Israel. "Making known Gods name" meant for Israel the beginning of a covenant of mercy.
When Jesus again "made known Gods name" to his people
- he gives a clear sign that he is willing to make a new beginning
- that it is time to repant, time for the kingdom, time for the forgiveness
- that he is here and present for gods people
- Jesus reveals the name JHWH with a new facet, that it doesnt merely mean
"Hey, I AM WHO I AM" but even more now in our time
"Hey, I AM here with you where you are, I love you",
"Hey, "I am with you in Jesus your brother who represents me in fullness"
" Hey, I am here to help you, to reconcile you, to save you, to redeem you from death"
"Hey if this one sacrifices for you his life, than he does what I would do for you, because I love you
to the utmost, when I am who I am and therefore being with you in the "
That is what the merciful revelation of "JHWH" means for Israel and Christians, the voice out of a thornbush.....
So Jesus was lately the best and perfect pronounciation of JHWH in the first century even if the correct pronounciation of the old Tetragrammaton was never again used, reminded and became forgotten. But the message of love remained.That was a story as an example of change of notions about God.