The cheapest and easiest to connect microcontroller for outputting/receiving data from a computer?

Question

Electronics

I wanted to implement a number of simple devices, for example, depending on some events on a PC (Windows OS), we transfer data via USB to the microcontroller, and we light the desired color of the RGB LED on the controller ports, or, for example, receive events from a hardware button , etc.
Few I / O ports are required - it would seem - the simplest microcontrollers should handle it.
Ideally, it would be possible to use something like ATTiny13...
But that was not the case... - "ATTiny13's older brother" - Digispark ATTiny85 - failed to connect to data output, including V-USB ... Taking ATMega8 and higher for such a task is somehow already wasteful...
They seem to praise STM8 - but an example of the implementation of the plan - to connect a PC via USB to data output - somehow did not come across on the network ... STM32 is already an overhead, and the cost will already be higher ....
What other options?

Answer 1

You don't need a microcontroller for this - FT232 and CP201x chips will do - both provide 8 GPIOs

Answer 2

The "simplest" microcontrollers are not the easiest to use.
Do not do nonsense and take arduino + standard examples from the documentation.