Sorry, but I doubt that for so many reasons...
Hillary is done... she knows she had her chances, and blew them both...
Her party doesn’t want her....
And, for her many many flaws, she’s smart enough to know Trump will win handily in 2020 (short of an economic meltdown).
If she truly wanted to be President, she wouldn’t gun for 2020, its a throw away year for the democrats... no serious contender is going to take the title of nominee, they all know Trump is a given win. 2020 will be some back bencher who knows they can’t win but will fight to keep the down ballot competitions competitive.
She’s too old to wait for another chance.