Those are new projects in the market, and if you are not careful with those new projects, you can invest on them hoping you will make a good profits from them than to see them reducing price till they disappear from the market. But there some old projects in the market that will guarantee you good profits, if you can hodl like 5 or 6 months before you can market your coins and you will earn what will make you to like old projects in the market than the new project you don't know their previous record in the market.
I don't know if you have invested in BTC before and you are trying to invest in altcoin, but if you have not invest in BTC, I will advise you to try BTC because there are opportunity for you to accumulate profits faster than altcoins in this season.
Bitcoin should do a 2x from current price to the bull run peak next year, possibly 3x but altcoins will do 10x, 20x or even 50x - I prefer to invest in altcoins.
The key with altcoins is being diverse, not having too much money in one investment. A few might go to zero , but one will likely do over a 20x which covers me.