One of the best ways to protect your crypto investment is to secure a wallet and do your own research about the projects in the market.
Don't believe everything you're told. Instead, examine any claims made about investment, especially if they appear too good to be true or promise huge returns in a short period. Also, do not trust anyone who contacts you personally, whether a government official, a public personality, or a stranger, and asks for Bitcoin payments or offers you an "investment opportunity."