Create your own non-custodial wallet. Ideally keys would be generated either on an airgapped computer, or on a hardware wallet (e.g. Ledger).
For non-significant amounts that you want to be able to use in the go, you can choose to additionally have a hot wallet (others have already mentioned MetaMask for ETH-based, for example).
If you do not want to go the extra mile and want convenience, and have an iPhone, personally I think an iOS-based wallet is a more secure choice than having it on your desktop or Android device.
Save your BIP39 seed phrase offline (paper for example). Protect it with a pass phrase. If you want extra protection on the passphrase, there are solutions to “split” it using Shamir’s scheme to for example 2-out-of-3 and store the parts on different locations. (Definitely run this on an offline device, for example on a laptop booted from a live USB key)
Either way I advise against fully custodial wallets such as blockchain.com or crypto.com (commonsly recommended but not your keys not your coins).
For non-significant amounts that you want to be able to use in the go, you can choose to additionally have a hot wallet (others have already mentioned MetaMask for ETH-based, for example).
If you do not want to go the extra mile and want convenience, and have an iPhone, personally I think an iOS-based wallet is a more secure choice than having it on your desktop or Android device.
Save your BIP39 seed phrase offline (paper for example). Protect it with a pass phrase. If you want extra protection on the passphrase, there are solutions to “split” it using Shamir’s scheme to for example 2-out-of-3 and store the parts on different locations. (Definitely run this on an offline device, for example on a laptop booted from a live USB key)
Either way I advise against fully custodial wallets such as blockchain.com or crypto.com (commonsly recommended but not your keys not your coins).