So always use a non-custodial wallet and keep your seed phrase safe, then hopefully you will be safe. Binance was hacked and a very large amount was hacked by hackers. However, they are trying to recover them and they have ensured that the users' funds are safe.
I have seen your advice as use non-custodial wallet and keep your seed phrase safe, I will say that its a good advice but should be elaborated more. For example one needs to understand that all non custodial wallets are better fit to even use as wallets, for a wide broad example one shouldnt be using hot wallet for large amount of funds savings because such wallet can be compromised through that hot device, this doesnt even need to access your offline back seed phrase, if you notice even exchanges facing hacks it was there hot wallet that was compromised, so the emphasis should be cold wallet and a reputable open source wallet, even if its an hardware wallet one should stay away from the ones with question marks around them.
Multisig wallet is a good option because it's difficult to compromise the wallet since, it uses more than one private keys to approve a transaction. However, just as stated above Electrum cold storage is more preferable for me because it's your own set up as long as you set it up in a secured environment and generate your keys on an airgapped device.
Yes multi sig wallet seems to be the best option because it adds layers of security unlike a single sig but its not tamper proof too because we have seen from bybit hack last year that multi sig wallets can be compromised when the holders are tricked into signing certain transactions which were from hackers. So even with multi sig the owner should be careful and also most importantly should use a different device for each signer or better still explore the option of single sig with pass phrase