I know you do not wish to converse with me, nevertheless I wanted to respond to your genuine questions here with a few thoughts. Hopefully you will forgive the intrusion.
So what do we do today, those of us who truly want to worship God in an acceptable way? Do we meet as did those early Christians or do we strike out on our own and find our own personal, individual relationship with God? Is the answer personal salvation apart and separate from all others or is it to be found in an assembly of believers?
If it's within a body of believers, where is this body now?
I believe Christians of the first century met and were encouraged to meet together for only two reasons. 1) They needed the mutual encouragement and 2) to see to the dissemination of the good news. I think those remain the only reasons for Christians gathering together today also.
Meeting together for mutual encouragement included continuing education into God’s Will, sharing strength of conviction, stimulation related to faith, and otherwise building one another up for whatever the need is.
Meeting together for dissemination of the good news served the object of Jesus’ command to witness in all the inhabited earth. Being aware of what fellow Christians are doing in relation to that work we can build upon it by acting in some semblance of a concerted effort. Remember that Jesus taught his followers to act as his agents in that work and as his agents we exist under a single congregation, his. So, naturally we would have that as a reason for meeting together.
As for our relationship with Jehovah through his son, that has always been a personal thing. While meeting with others of similar conviction can help that relationship it is nevertheless something nurtured only between the individual and God through his son, Jesus. Salvation is likewise an issue between each individual and God. Some persons have no choice but to go it alone. Certainly in that case they will not be automatically lost due to their inability to meet with other of similar conviction.
As for the body of Jesus’ followers, they are all around us. Persons doing their level best to follow Jesus are his true followers. We will see them quarreling amongst themselves over things ranging from petty to significant. We will see them making one mistake after another. We will see serious sins being committed in their number. We will see lack of love, false prophesying, et cetera. What will not see amongst Jesus’ followers, though, is them ceasing to confess Jesus as their leader and master or ceasing to place their future hope in God’s kingdom in Jesus’ hands. We will find these persons among those dissemination the good news of God’s kingdom, even if the most they can do is give out Bibles. Being among such people and trying to help them as they help us is a fine thing.