Bargains aren't bargains if there's not much hope for a strong rebound move.
Believe it or not, the stock of Amazon (NASDAQ: AMZN) has done basically nothing over the past year and half. Looking underneath the hood, AWS accelerated 39% versus 37% in the prior quarter and 29% in the prior-year period. Operating margins came in over 30%, despite Amazon's heavy investments in growth.
An index fund is safer, because with an index fund you are diversified and you've minimized your risks. The more stocks you own (and an index fund represents an investment in many, many stocks), the worse your overall returns will be. With an index fund you own the good, the pretty good, the average, the below average, and the awful.