These are probably new altcoins, because I haven't even heard of YOUC, AME, nvzn and dondi. I prefer to buy more well-known coins and preferably those that are traded on major exchanges. I love the coins that are traded on Binance, they are often promising and have good growth potential. I recently purchased a DOCK coin and keep it, as they are now in the process of migrating to their own blockchain, which is always well reflected on the project and the price of the coin.