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?
How tall are you? How good were you in high school? Do you have college eligibility? If you could walk onto a college team and dominate, it might be possible. There really isn’t any other path for this to be done.