I have one bitcoin and I want to invest it in 3 or 4 projects that have a good potential for return of investments. And because of existing a lot of projects, I hope that you suggest to me some projects according to your visions so I can study them and choose which I can invest in.
Bitcoin alone is a really good choice and youre not going to regret that one. Youre likely to make profit from Bitcoin than any other cryptocurrency in the market, though altcoins tends to bring more profit when they increase, and same thing with loss; the loss is too much when it starts to fall. I dont know about Ethereum, but it has a scaling problem and everyone already knows that, its like an open secret. You can still invest in it if you want.
Another one is Litecoin, and its going to make a really good choice. Litecoin is like the silver in the cryptocurrency market, while BTC is the gold. Others are Tezos, Binance coin (BNB), Basic Attention Token, Monero.
I have removed Litecoin from the list of top altcoins in this market, for me litecoin has come to an end and its price will not be able to increase since halving in 2019. If you want invest in litecoin then I believe that it will be difficult for you to make a profit with it, rather than investing in other altcoins that you have listed it is ETH, BNB ..