What software you use?
Unity and blender.
how can I trust you?
Yt channel , discord roles (dev-help,gamedev) over many servers and experience.
how will you communicate?
I prefer texting over calls. I will share details and screen-shots of the work done regularly.
how will we do transactions?
Google pay
how many games have you made?
Many, but not official due to copyrights or were made for fun purposes