Thanks all for the informations.
Is Uniswap to be considered safe? I see it in few alts.
It's safe on it's own, just make sure you confirm the contract address of token you are purchasing, since there tends to be lot of scams related to that.
(....)
This is one of the problem on Uniswap, having some clone or copy-cat projects and you will ended up getting rekt purchasing some fake altcoin.
But what most problem here is, knowing that not all small marketcap is good altcoin, some of them are being shitcoin also because they have a small market cap (but not all).
You just always do your own research.
Uniswap is good and other decentralized exchanges like Sushiswap.