There are dozens of wallets to choose from when it comes to securing your private keys. Hardware, software, metal, paper, each with their own trade-offs. Remember: if you aren't holding your own private keys, you don't actually own bitcoin - you just own an IOU for BTC!
Note that it is NOT recommended that novices use the Bitcoin Core wallet. If you want to use a wallet backed by a fully validating node you run, read Securing Your Financial Sovereignty.
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