Wiring for a bathroom, bedroom and a bathroom exhaust fan all together

I need some help with wiring plz. I live in the USA. Here are three pics of the setup i want to do.

First one is a bathroom Fan wiring. It has 2 green wires, black and grey as shown below:

The next one is for the bathroom light that was in there previously:

The last one is from a bedroom that was hooked up along with the bathroom light (yes, i know its wrong but it was setup in the 1950’s and right now i dont care:

I hooked up the 3 whites together, 3 blacks together, 2 greens and 2 cooper together like it was setup as it was for the light that was previously in my bathroom. That way worked fine for bathroom had it’s light switch and the bedroom had it own switch and those work fine.

Now when I hook up it the same way with all the blacks together, all whites together, all coopers and greens together and i switch the breaker back on the fan goes on when both light switches are off. The fan stays on all the time.

Can someone tell the correct setup so the fan will go on when the bathroom light switch is in the on position. Hope this makes some sense.

PPPLLLEEEAAASSEE help me. TIA

Edit: I am pretty sure there should be 2 separate junction boxes with romex cabling used throughout the house but i am pretty sure my house has knob and tube wiring and i am not about to rewire all my house since it was built in the 50’s.

Edit 2: Or can I place the wires from one knob and tube cable into a junction box combined with one end of a romex cable and run the other end of the romex cable to another junction box and combine that with my second knob and tube. In first junction box hook up the black to black, white to white/gray and cooper to 2 greens together. On the second junction box combine the blacks from romex and knob and tube, the romex white to the knob and tube white/grey and then it will work correctly? Plz let me know.

TIA