If you have 1000 USD, maybe adjust the investment with your funds. If you invest in bitcoin or ethereum, it's already expensive and the profits won't be too much. You can buy coins that are not too expensive, such as ADA, WAVES, BNB and other coins that have good potential in the future. But remember altcoins sometimes if it has gone high you have to sell it, because to go high again sometimes have to wait for altcoin season or have to wait for bitcoin bullish.
That's the problem with investors today. with a small fund of only $ 1000 if they invest in BTC or ETH seems to only benefit a small profit. I think the coin selection has potential but has a low price is the best. if you dare to take risks you can speculate on coins like CAKE but it is risky and must really require accurate analysis if you are on coins like CAKE