Sometimes you can be lured by sweet words and might fall into others trap. As a newbie here you are motivated to try trading for the first time and then decided to buy and sell to earn a little profit. Check on those cheap decentralized exchange and then buy the coin you want to buy and sell, and the suddenly you cant sell it on legitimate exchange. The last thing you know is, its a wrong coin but with the same name but with different contract address.
Always be more cautious nowadays because a lot of trap are out there trying to make money from us, as a newbie also in crypto, i am sure that everybody should do a study first on certain coins we want to trade or buy or sell, the fact is many are scammers are out there, and are making money in huge amounts in introducing new coins, and then abandoned it at the end, so lets be careful on what coins we trade. Lets help other newbies to be more educated.