We may have to agree to disagree on this, but I do not see you as being logical, reasonable, or truthful in this: Matthew and John were two that personally witnessed Jesus Christ, and what about the stories about Peter and all the apostles being gathered together and spoken of in the book Acts when the Holy spirit came down upon them, these were all "firsthand" witnesses, of both Jesus Christ, and of the power of God/Holy Spirit, in and through the use of Jesus name...
Others were his disciples like Mark and Luke and maybe even Stephen and other disciples some of whom wrote books, the truth is we don't which of these disciples witnessed Jesus first-hand but it is reasonable to assume some did and might have been of the original seventy that Jesus personally sent out...
Others, who you say, were not firsthand witnesses may have had a personal appearance by Jesus after his resurrection, or/and even if they didn't, they are firsthand witnesses of the power of God and of the Holy Spirit, working through Peter, Paul and others, which was sent by out by/through what and because of what Jesus did, and they were performing miracles in Jesus name, through and by the use of Jesus name, and their are many firsthand witnesses to this/these accounts/effect(s)
So, I disagree with you and believe you are only in denial of the truth...