- You are asking for a three course meal from a service that’s barely a burger joint at this point.
- You are confusing traffic advisories with a traffic alert.
“N808XX traffic on 1 o’clock 4 miles” is not the same as “N808XX Traffic alert 1 o’clock advice you turn heading zzz immeadiately”
Yes traffic is very hard to see sometimes. It is that way in the real world as well. And of course traffic on your six is hard to see in most airplanes 
IRL some controllers would give you a heads up where to expect the other airplane to pass you and the rate of closure. Others may be indeed more pro-active and “suggest” a heading to decrease the conflict potential.
The only time you are not expected to look outside is when you are in IMC.
In busy airpace and with lots of chess pieces ATC can and will delegate separation to the PIC when possible.
Traffic in sight = maintain visual speparation.