You asked for proof and I gave you proof from two sources, a non catholic source and a catholic source so your rejection, because of your anti Catholic view, is invalid.
Those proofs are from early church fathers and early councils, 2nd-5th centuries AD, and were quoted from their writings. Your anti Catholic view has nothing to do with that fact.
But here is further evidence from five more non Catholic sources
Early Church Writings On Baptism — Behold The Truth
Water Baptism in Early Church History 101 - Was water baptism required for salvation in the early church
Baptismal regeneration - Wikipedia
Church Fathers on Baptism
Baptism in the Early Church (2-5th Centuries) — Trinity San Antonio Lutheran Church
I could even give more non Catholic sources but 5 is more than enough to refute your invalid rejection.
There is absolutely no dispute from anyone, not even protestants.
The early church believed in baptism.
Here it is shown that there has never been any dispute about the fact that the early church, 2nd-5th centuries AD, believed in baptism. A non-Catholic source.
View attachment 87298
No one has ever disputed it and at this stage your really just embarrassing yourself of you continue to reject this fact.
We had a decent conversation. I accept that there are different opinions given the long history and many denominations. Its sad that you can't accept that. Nor can you accept that the early church believed in baptism despite it being an undisputed fact.
But anyway, good luck to you and God bless