(5) Use trusted exchange and wallet.
There is no trusted exchanges. If they are centralized exchanges, you can not trust them with your money.
Saying you can't trust them with your money is too big of a statement because you can't trust the decentralized exchanges either as they're not better options. in fact DEX are getting more hacked than CEX. We have reputed exchange that you can use for trading, this exchange have been operating for quite sometime and are unlikely to scam you when you use their exchanges for trading but what you shouldn't do is to use exchange wallets as a place to store your cryptocurrency.
Traders keeping some money on exchanges are taking a big risk even though they'll need those funds for quick trades and can save some dollars on transaction fees but an investor has no point storing their bought coins on exchanges. You can avoid exchanges until they gained some reputation among the community. I don't use an exchange that's hasn't experienced the bear market. I'll use the old and reputable exchange over the news ones attracting users with their juicy offers.
We're human beings, we have to trusts so I'm giving credit to some of the exchange that has been provided service to the community even though they aren't the exchange we were hoping will provide those service. All what I'm trying to say is that we have reputable exchange that you can use for trading and trading only.