Maybe you do not realize this, and I'm not trying to be mean.
I built this forum on my own time. I pay for it out of my own pocket. I have not yet even added advertising to help pay for it.
phpbb is very old software, last generation. This forum is running on Discorse which is cutting edge next-generation forum software.
When you say "better" software, I'm not sure you know what you are speaking about. Feel free to start a private conversation if you wish to discuss this further.
I provide this website free of charge to the public. Please do not however suggest it is inferior in some way or another, it really is not relevant.