step by step midi plugin please

According to Yamaha, your particular keyboard does have capability to transmit audio via USB, but I think it may just be for playing audio files into your keyboard, not for recording out of your keyboard. You'll need to check your manual.

To capture audio with my non-USB Casio, I use an audio cable from the headphones output jack to the audio input in my audio interface. In Logic I create an audio track and select the appropriate input. I can then record the audio of the sound patch that is built into my keyboard and it will play back through my Mac even if the keyboard is turned off. (If all else fails, you could do the same, as I mentioned earlier. Run an audio cable from your keyboard's Phones/Output jack to your interface.)

Of course, that is for recording audio from your keyboard. You can still record MIDI via a software instrument track with a stereo External Instrument plugin inserted.

Here are a couple of things you may find useful:

https://usa.yamaha.com/files/download/other_assets/9/1094839/computer_en_rm_m0.p df

https://www.musicrepo.com/recording-a-keyboard-on-computer/

Hope this helps.

What Guitarist said. I'd like to add that there's a wonderful plugin called External Instrument that you can use on a Software Instrument track (see screenshot). Here's how I'd set it up: MIDI Destination (choose your Yamaha keyboard), Input (choose the Input on your Mac or audio interface where you connect Yamaha's Audio output). The beauty of this External Instrument plugin is that you can treat your keyboard's output in the same way as a software instrument (i.e. apply audio effect plugins, etc.) You probably would also like to set up an audio track to record what's coming from Yamaha, too. Just be careful and mute or disable External Instrument when actually recording MIDI parts into Logic, to avoid MIDI feedback loops. Cheers!

Am I understanding correctly that you want to record the sounds that are built into your keyboard?

It sounds like you have your keyboard properly connected via USB cable and have been able to record MIDI data from your keyboard, using it as a software instrument. However, MIDI is data only and is used to trigger sounds in a software instrument. It does not contain any audio.

If you want to record your keyboard's built-in sounds you need to connect the keyboard with a cable running from your Phones/Output jack into your audio interface or directly into your iMac.