If you’re not an amateur at all, that you actually have been playing basketball almost all of your life but you stopped after graduating high school, can at the age of 23 you start grinding your way back to reach the NBA and successfully thrive in it for years?
I doubt you’ll make it, professional players play college ball or overseas and recruiters notice them there. Make your way into the G league if you can and maybe you’ll get lucky and get into an NBA game.