This is the type of things you should be asking and making research to know as a beginner. Your crypto assets security should actually be a top priority before you should even think of owning the assets because if your asset is not fully secured, you may probably be holding it for another person (likely a scammers).

Now to answer your question, To keep your crypto assets safe, you need to have a secured wallet. Considering the number of responds in this thread, I believe you have been recommended several ways to keep your crypto assets safe but of course, I will add my little contributions. Although, there's no other way to keep your crypto assets safe other than a wallet. These wallets can either be on exchanges or a self custody. Self custody is the recommended wallet but have it in mind that the responsibility to secure your private keys lies absolutely on your.