First off, given your research, or lack thereof, thus far, you seem to be aiming to speculate on a coin price fluctuating. Given that margin trading and/or future contracts are commonly offered with up to 125x leverage, you can go short/long the highest market cap coin on leverage and achieve significant returns if your aim is indeed speculating/day-trading, without the added manipulation in prices that lower-cap coins are rife with.
HINT Chances are you WILL fail if you head into that with non-existing experience and no specific mentality to back it up in less wild markets than the still unregulated and at times manipulated, nascent crypto-market.
Then there is investing in crypto, where you should note that regardless of the nay-sayers here, there is absolutely a place in an investment portfolio for crypto, albeit a small one, especially if you re risk-aversive. Focus on large market caps, preferably THE largest market caps with a distinct purpose, aka Ethereum & Bitcoin since those are the most likely survivors even if things go awry. Returns of such assets, like crypto, are enough to make a meaningful impact even on small allocations, while a market failure won't hurt since the allocation was small, to begin with.
Then you can utilize a plethora of financial services to gain returns in kind, even if the assets themselves do not appreciate. These can be a centralized margin loan provider like BlockFi or Nexo or a decentralized one like Maker / Compound or lending directly on well-known exchanges like Binance.
If you feel like taking additional risks, then you can also have a look here for Proof-of-Stake crypto. Owning a stake/amount of those allows you to use that to take part in securing the network/validating transactions and get a yield based on the protocol's inflation. Again, you should practice extreme caution and thoughtful research if choosing to go this route. Ultimately the $ denominated value of the underlying asset is what will matter so that a wrong choice will again leave you with worthless tokens in the end(even if its a higher amount of those than you started with).
To sum up, you need to fix your mindset, get away from get rich quick schemes and play for the long run as it seems for the time being you re being impatient and want to make it big with crypto where the real (boring) answer would be to get your investment portfolio in order with crypto being a small disciplined portion of it.