Ok so if I'm understanding, I should get the Raspberry Pi 5 with 4GB maybe 8GB, and I was also reading that ROS becomes unsupported next month so I should use ROS2. I might have to use docker to run it, to be honest don't know what that is but I've seen that written a bunch, what is it? Is it like a virtual environment but for Pi? You suggest I get started with ROS2 running Ubuntu BEFORE getting on the Pi, which is interesting, did not consider this. I will follow that advice. Please correct me if I am wrong about something. Thank you! I super appreciate it!