Any stock under Nifty 50, but has fallen down in the recent days.
You should buy when the price is low and sell when you see expected gains. But strictly analysing your risk capacity. Learning Price Action helps brother.
I will be blunt here brother, your question should be how much you will lose, and the answer for that would be almost everything.
But if you focus on learning first and then start investing/trading, you can gain a certain amount. (Depends on what stock you pick and how it moves ...