how can I make 50k by tomorrow

Eh well you could possibly get a loan. But you wouldn't make 50k you'd just be in debt for 50k. Plus, that's a fairly large loan and you'd need good credit.

Another way is investing a fair amount in a crypto coin that your local psychic has said will increase dramatically in price in the next 24 hours.

You could somehow manage to score a contract (government or a individual) for a job that give you 50k up front, and the rest later. However you'd need a fair skill for this, and to close a deal of that size in a day would be almost impossible. With my company, I've closed seven figure contracts. Most of which take weeks if not months to secure. Not so easy.

So you could rob a bank, and make it relatively fast. Then go to jail.