Cryptocurrency e-wallets are special applications that are installed on a mobile phone or computer and provide access to individual accounts with cryptocurrency. On the one hand, in this case, the funds are better protected than on the exchange, on the other hand, they are always accessible. In case of loss of a phone or computer, such a wallet can be restored on a new device, and such wallets provide reliable protection from intruders. If you are interested, I can recommend visiting
https://www.trustchange.com/ where you can read information about one of the most reliable crypto wallets.