Both ways are good as they perform different functions. If you are a trading or summ of coins are negligible choose exchange. If you want to hold for a long time or have large share you should go for hardware wallets.
This is a good advice, I hope those who want to invest will always explore the best method to protect their invest.
Crypto needs more time to achieve bigger success and as an investor who are supporting that should always ensure we are safely keeping our coins and tokens.
I think its better if you have wallet first especially when youearned a lot of coin and put ot all in your wallet, then exchange it when you need money atleast you can keep it and possible your store coins goes higher in value when you exchange it and at the same time the value is increasing. Exchange and wallet are important when we work in crypto so you can protect your collected coins to avoid lose it all.