I forgot to mention that it should be in mobile if there is any.
I think you should try learning the Electrum Wallet. it is also available for desktop and mobile.
Maybe you can find more information related to Electrum here.
https://bitcointalk.org/index.php?board=98.0Whatever wallet you use, they already have security standards. It's just that sometimes we as users make mistakes.
My advice is when you plan to store Bitcoin in larger amounts and long-term in the future. buy a hardware wallet.
Electrum is an open source wallet that is quite good to use, there is a lot of development going on and security is constantly being updated. I use it for my desktop and mobile. related to definite security issues, of course it depends on how we as users, whether we use it wisely or not. because security will be vulnerable when users don't think about their own security and tend not to care about the security of their wallets. Hardware wallets can be a very appropriate recommendation for vulnerable security problems and will be the main storage for your assets.