LOL I've been wondering for a long that the app I have on my phone is my wallet and all that. I had no idea that I had misunderstood this. Let me now explain what I recently learned about your wallet.
Let's start with the fundamentals of wallets for people who are new to this area.
It's not a wallet in the conventional sense, whether it's Metamask, Electrum, MEW, Trust, Coinomi, Atomic, or any other program you consider a wallet.
Actually, you can use these wallet software to securely maintain and access your cryptocurrencies, NFTs, and other blockchain assets.
Your private key or seed phrase is what makes up your wallet.
For illustration:
It provides the option to produce a seed phrase or private key when you install Metamask.
Other programs like Trust, MEW, and Atomic may all access your ETH if you use the same seed phrase across them all.
Therefore, the next time you download a wallet app, you won't need to create a new seed phrase; instead, you can import the one you already have to manage your current funds across different apps.
It's important to know that seed words are incredibly versatile and let you manage assets on any platform.
In online works, security is very important, because If the phone you are using has been lost, if you have put a screen lock, a pattern or key lock then other users can't open it easily but if these security system hasn't been implemented then it would be difficult for the users to keep himself safe from the loss of his apps. So, there should be always some locks inside the mobile phone like fingerprint on every app, whether that includes your wallets which you are using and this also includes the YouTube channel information if someone has any. So, all this information would be safe.
But the seed phrase you have imported should also be saved on a USB, or in your laptop, and should be at least in three places. For example, if you lost your mobile phone and your laptop got dead, then it will be present in your USB. I hope you understand!