I have a book written by André Kostolany, which taught me one thing and I believe I've forgotten the rest, because only this one fundamentally matters:
Don't hunt for rising stocks, but chase the falling stocks. Everything that goes down either eventually goes up again, or dies.
While this sounds like it's not helpful, all that's required is figuring out if a company is likely going to die. Even without any manual research, time is ultimately telling. The longer a company at the bottom doesn't die, the more likely it's going to rebound eventually.
Don't hunt for rising stocks, but chase the falling stocks. Everything that goes down either eventually goes up again, or dies.
While this sounds like it's not helpful, all that's required is figuring out if a company is likely going to die. Even without any manual research, time is ultimately telling. The longer a company at the bottom doesn't die, the more likely it's going to rebound eventually.
https://en.wikipedia.org/wiki/Andr%C3%A9_Kostolany
PS: Don't gamble your life away.