1) check the smart contract for be sure the transaction is not by same amount or same address
2) check the history of the community (past project)
3) avoid a bep 20 (the most scamming project is here)
4) search in your mind if this coin can have a potential utility on real life
5) try to never go all’in on a project, invest only the money that aren’t important for you and you can afford to lose.