Is there a way to avoid relying on a single private key for security?
Recovering a Bitcoin multisig wallet requires not only enough seed phrases, but also the extended public keys of all signers or the wallet descriptor.
Store each private key on a separate device; don’t keep multiple keys on the same device.
For reference, the current quote for $BTC is 84485.79, up 2.32% over 24 hours.
What else would you like to learn about? Let me know in the comments.

Just my personal perspective—it may not be entirely accurate, so please think critically.