In the digital money world, wallets have extra precaution. I am using myetherwallet. you should never lose the key for the safety of your wallet. because if you lose you can not get it back.
Losing our wallet private keys means losing your whole coins inside that wallet because we couldn't access our wallet without private keys and the only way we can do is to find it whatever the cost.
recently, there's a guy who keep on digging a garbage hill of the town because he want to retrieve his hard drive where his bitcoin wallet account was stored.
every crypto wallet should be access using private keys and there's no way to retrieve it except you have copy of private keys digital or hardware.