Bro, stop fighting this lol Im not in front of my ps5 right now so I dont have exact instructions for you but I promise I will give them to you when I get home. There is the my NBA scenario which brings you to a point in the season and there is a myna setup , I wanna say, that saves the settings for when you are going to start a a mynba.
Now I think where you may be confused is you dont like start a myna then load your settings in. Theres is a man nbafile with your settings saved and you load that file which allows you to start at either the "pick your settings" for mynba screen or you can jump to screen select where you just pick your team
I believe you goto mynba scenario and then from there there is another option to just load a like "setup"/. I even use schnaidt1's setups for development and all of that. I load that up and then it goes to the my NBA settings screen and I goto the option to load the newest roster, and boom