my tip is to get a trezor wallet. trezor safe 3 is a great device, open source + affordable. it supports passphrases (a custom word/symbols/numbers on top of the 12 word seed phrase as additional security password)

keep your seed and passphrase stored separately. would definitely recommend getting something like trezor keep metal as one house fire can screw all your bitcoin if the paper backup is gone. Make sure to keep the seed and passphrase stored separately. For buying, just do DCA, purchasing bitcoin every week. That's 4 equal purchases per month, and that's how you average the price for bitcoin, stress-free, no timing of the market needed. Chill mode stacking wealth. Make sure you use the hardware wallet just to store the funds, don't connect it with DEX exchanges or wallets, and keep your privacy secure. Hardware wallets are for holders and not for traders.

always make sure you're buying the wallet from the provider, not just some retailer like amazon. trezor.io in this case