The biggest threat to your crypto isn't a market crash. It's a phishing link, a fake support agent on Telegram, or a screenshot of your seed phrase sitting in your photo roll. Every week, real people lose real money this way. Most of it would have been preventable in 30 seconds.
The basics: never share your seed phrase. Not with "support," not with "customer service," not with anyone who DMs you. Real support never asks for it, ever. Bookmark the official sites you use and only ever go there from your bookmark, not from a Google ad.
If you have more than a few hundred dollars in crypto, get a hardware wallet. Ledger and Trezor are the trusted brands. They cost about $80. Your seed phrase lives only on the device, and the device has to physically approve every transaction. It's the cheapest serious upgrade in the whole space.
One rule that catches most scams: if a website asks you to "connect wallet" and then immediately asks you to sign a transaction you don't understand, close the tab. Read what you're signing. "Approve" pop-ups can drain you in one click.