The core concepts of cryptocurrencies include decentralisation; so basically, there is no central authority that holds your coins.
This makes you 100% responsible to the safe keeping and security of your coins.
The most secure option that I recommend is to use a hardware wallet such as Ledger
Click on image below to learn more and order your ledger Nano
Other options available include different kinds of online and off line wallets with varying levels of security features.
There have been several instances of hacks resulting in theft of millions of dollars worth of Cryptocurrencies. .
So ideally, you should be in control of your private keys that you use to sign off transactions from your wallets.
I cover all these in detail in my LearnCrypto course
You will learn about the different kinds of wallets and how to store your coins securely.