Snap likely isn't going to make a comeback anytime soon.It's been tough to hold Snap (SNAP 1.37%) stock. Shares have dropped by 30% this year and have crashed by more than 80% over the past five years. The IPO excitement of a new social network is long gone as investors come to terms with low revenue growth, high losses, and intense competition.Snap stock still isn't a current buy at current levels, and investors shouldn't waste their time looking for an attractive entry point. There are plenty of good oppo ...