Maybe I read it wrong first time - it does look like you mean running the monitor from the RPI? It's possible for a small screen if it's 5v and draws 500mA or less (usb2). But I'm not sure that's a good way to do it. What are you trying to achieve by wanting to do it this way?

Actually you can probably draw more (see "FAQs - Raspberry Pi Documentation" https://www.raspberrypi.org/documentation/faqs/#pi-power) if the PSU is up for it, but powering a monitor is best done separately really.

@BeefN-OnionPi said in (Pi 3A+) usb controller player 1, bluetooth controller player 2:

could i configure player 2 once and not have to keep configuring ?

Yes, once paired and configured, the Bluetooth controller should work fine, without any re-configuration.