If you don't want to get too complicated with flight controllers, soldering, programming, etc. then one option would be to get a ready-to-fly LOS plane with a stabilization system like SAFE and then put an all-in-one camera/vtx on it. Here is one option and here is another. With your current screen, you only need to power the camera, set the output power level how you want it, and make sure the channels match between the screen and camera.

You can get a PNP AtomRC Dolphin with fpv setup, but that is probably the closest thing to what you're asking for. The problem with a ready-to-fly kit for FPV is that most in this hobby have different requirements and different interests. It's very hard to offer something that has mass appeal, especially when most of us prefer to DIY just about everything once we're past that short beginner period.

The camera is on amazon for $40. it works fine it’s called the spotter https://www.amazon.com/dp/B078PK98HC/ref=cm_sw_r_sms_awdo_t1_h4bREbZWKRQ9C and the goggles were cheap so I had to buy new antenna for them so you are better off getting goggles for $100 or more if you want good range without upgrades. I did not need a separate battery the spotter plugs direct to the car in the transmitter.